Repository: ant-design-blazor/ant-design-blazor (csharp)

Issue:
When Card is used, the Tabs component's tag position is always in bottom
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### Describe the bug

When Card is used, the Tabs component's tag position is always in bottom
----------------------translate---------------------
当使用了Card时，Tabs组件的标签位置一直都在下方

![image](https://user-images.githubusercontent.com/3509249/116208381-73c06b80-a773-11eb-9aa1-189cd277acdd.png)


### Steps to reproduce (please include code)
use Tabs in a card:
```
<AntDesign.Card>
	<Tabs DefaultActiveKey="1">
		<TabPane Key="1">
			<Tab>TabName1</Tab>
			<ChildContent>Content1</ChildContent>
		</TabPane>
		<TabPane Key="2">
			<Tab>TabName2</Tab>
			<ChildContent>Content2</ChildContent>
		</TabPane>
	</Tabs>	
</AntDesign.Card>
```

### Exceptions (if any)
<!-- 
Include the exception you get when facing this issue
-->

### Further technical details
- AntDesign Nuget Package version: 0.8.0
- Include the output of `dotnet --info`
- The IDE (VS / VS Code/ VS4Mac) you're running on, and it's version: VS16.10.0 Preview2.1

Pull request description:
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### 🤔 This is a ...

- [ ] New feature
- [x] Bug fix
- [ ] Site / documentation update
- [ ] Demo update
- [ ] Component style update
- [ ] Bundle size optimization
- [x] Performance optimization
- [x] Refactoring
- [ ] Code style optimization
- [ ] Test Case
- [ ] Branch merge
- [ ] Other (about what?)

### 🔗 Related issue link

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1. Describe the source of requirement, like related issue link.
-->

fixed #3887 
fixed #4061 
fixed #1424

### 💡 Background and solution

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2. GIF or snapshot should be provided if includes UI/interactive modification.
3. How to fix the problem, and list final API implementation and usage sample if that is an new feature.
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### 📝 Changelog

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Describe changes from userside, and list all potential break changes or other risks.
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| Language   | Changelog |
| ---------- | --------- |
| 🇺🇸 English |           |
| 🇨🇳 Chinese |           |

### ☑️ Self Check before Merge

⚠️ Please check all items below before review. ⚠️

- [ ] Doc is updated/provided or not needed
- [ ] Demo is updated/provided or not needed
- [ ] Changelog is provided or not needed

Patch:
diff --git a/components/card/Card.razor.cs b/components/card/Card.razor.cs
index d3765dd521..564f8b7a9b 100644
--- a/components/card/Card.razor.cs
+++ b/components/card/Card.razor.cs
@@ -112,10 +112,6 @@ public partial class Card : AntDomComponentBase
         [Parameter]
         public RenderFragment Extra { get; set; }
 
-        /// <summary>
-        /// Tab content rendered below title
-        /// </summary>
-        [Parameter]
         public RenderFragment CardTabs { get; set; }
 
         private bool _hasGrids;
@@ -147,6 +143,16 @@ internal void MarkHasGrid()
             StateHasChanged();
         }
 
+        internal void InvokeStateHasChagned()
+        {
+            StateHasChanged();
+        }
+
+        internal void SetTabs(RenderFragment tabs)
+        {
+            this.CardTabs = tabs;
+        }
+
         internal void SetBody(RenderFragment body)
         {
             this.Body = body;
diff --git a/components/tabs/TabPane.razor b/components/tabs/TabPane.razor
index 188a764a6c..093ca8a211 100644
--- a/components/tabs/TabPane.razor
+++ b/components/tabs/TabPane.razor
@@ -1,74 +1,78 @@
 ﻿@namespace AntDesign
+@using Microsoft.AspNetCore.Components.Rendering
 @inherits AntDomComponentBase
 
-@if (_hasClosed)
-{
-    return;
-}
+@code{
+    internal void RenderTab(RenderTreeBuilder __builder)
+    {
+        if (_hasClosed)
+            return;
 
-@if (IsTab)
-{
-    var ondragoverPreventDefault = _isActive;
-    var onclickStopPropagation = !_isActive;
+        var ondragoverPreventDefault = _isActive;
+        var onclickStopPropagation = !_isActive;
 
-    <div @key="Key"
-     @ref="_tabRef"
-     @onclick:stopPropagation="@onclickStopPropagation"
-     @onclick="@(e => Parent.HandleTabClick(this))"
-     @ondragover:preventDefault="@ondragoverPreventDefault"
-     @ondragstart="@(e => Parent.HandleDragStart(e, this))"
-     @ondrop="@(_ => Parent.HandleDrop(this))"
-     class="@ClassMapper.Class"
-     draggable="@Parent.Draggable.ToString()"
-     id="@TabId"
-     ondragover="event.preventDefault();">
-        <div @onkeydown="@HandleKeydown"
-             @ref="_tabBtnRef"
-             role="tab"
-             aria-selected="@(_isActive ? "true" : "false")"
-             class="ant-tabs-tab-btn"
-             aria-controls="@($"rc-tabs-{Id}-panel-{Key}")"
-             tabindex="0">
-            @if (TabTemplate != null)
-            {
-                @TabTemplate
-            }
-            else
+        <div @key="Key"
+             @ref="_tabRef"
+             @onclick:stopPropagation="@onclickStopPropagation"
+             @onclick="@(() => Parent.HandleTabClick(this))"
+             @ondragover:preventDefault="@ondragoverPreventDefault"
+             @ondragstart="@(EventUtil.AsNonRenderingEventHandler<DragEventArgs>(e => Parent.HandleDragStart(e, this)))"
+             @ondrop="@(()=> Parent.HandleDrop(this))"
+             class="@ClassMapper.Class"
+             draggable="@Parent.Draggable.ToString()"
+             id="@TabId"
+             ondragover="event.preventDefault();">
+            <div @onkeydown="@HandleKeydown"
+                 @ref="_tabBtnRef"
+                 role="tab"
+                 aria-selected="@(_isActive ? "true" : "false")"
+                 class="ant-tabs-tab-btn"
+                 aria-controls="@($"rc-tabs-{Id}-panel-{Key}")"
+                 tabindex="0">
+                @if (TabTemplate != null)
+                {
+                    @TabTemplate
+                }
+                else
+                {
+                    @Tab
+                }
+            </div>
+            @if (Parent.Type == TabType.EditableCard && Closable)
             {
-                @Tab
+                <button type="button" aria-label="remove" tabindex="0" class="ant-tabs-tab-remove" @onclick="(e) => Parent.RemoveTab(this)" @onclick:stopPropagation>
+                    <Icon Type="close" />
+                </button>
             }
         </div>
-        @if (Parent.Type == TabType.EditableCard && Closable)
+
+        @if (TabContextMenu != null)
         {
-            <button type="button" aria-label="remove" tabindex="0" class="ant-tabs-tab-remove" @onclick="(e) => Parent.RemoveTab(this)" @onclick:stopPropagation>
-                <Icon Type="close" />
-            </button>
+            <Dropdown Trigger="new[]{ Trigger.ContextMenu }" TriggerReference="_tabRef">
+                <Overlay>
+                    @TabContextMenu
+                </Overlay>
+            </Dropdown>
         }
-    </div>
+    }
 
-    @if (TabContextMenu != null)
+    internal void RenderPane(RenderTreeBuilder __builder)
     {
-        <Dropdown Trigger="new[]{ Trigger.ContextMenu }" TriggerReference="_tabRef">
-            <Overlay>
-                @TabContextMenu
-            </Overlay>
-        </Dropdown>
+        if (_hasClosed)
+            return;
+
+        <div @key="Key"
+             tabindex="@(_isActive ? "0" : "-1")"
+             class="@_tabPaneClassMapper.Class"
+             id="@($"rc-tabs-{Id}-panel-{Key}")"
+             role="tabpanel"
+             aria-hidden="@(_isActive ? "false" : "true")"
+             aria-labelledby="@($"rc-tabs-{Id}-tab-{Key}")">
+            @if (_isActive || _hasRendered || ForceRender)
+            {
+                _hasRendered = true;
+                @ChildContent
+            }
+        </div>
     }
-}
-else if (IsPane)
-{
-    <div @key="Key"
-     tabindex="@(_isActive ? "0" : "-1")"
-     class="@_tabPaneClassMapper.Class"
-     id="@($"rc-tabs-{Id}-panel-{Key}")"
-     role="tabpanel" 
-     aria-hidden="@(_isActive ? "false" : "true")"
-     aria-labelledby="@($"rc-tabs-{Id}-tab-{Key}")"
-     >
-        @if (_isActive || _hasRendered || ForceRender)
-        {
-            _hasRendered = true;
-            @ChildContent
-        }
-    </div>
 }
\ No newline at end of file
diff --git a/components/tabs/TabPane.razor.cs b/components/tabs/TabPane.razor.cs
index a9c9d3ea3c..3996fbd8e4 100644
--- a/components/tabs/TabPane.razor.cs
+++ b/components/tabs/TabPane.razor.cs
@@ -10,12 +10,6 @@ namespace AntDesign
 {
     public partial class TabPane : AntDomComponentBase
     {
-        [CascadingParameter(Name = "IsTab")]
-        internal bool IsTab { get; set; }
-
-        [CascadingParameter(Name = "IsPane")]
-        internal bool IsPane { get; set; }
-
         [CascadingParameter]
         private Tabs Parent { get; set; }
 
@@ -70,6 +64,8 @@ public partial class TabPane : AntDomComponentBase
 
         private bool HasTabTitle => Tab != null || TabTemplate != null;
 
+        internal int TabIndex => _tabIndex;
+
         internal ElementReference TabRef => _tabRef;
 
         internal string TabId => $"rc-tabs-{Id}-tab-{Key}";
@@ -88,6 +84,7 @@ public partial class TabPane : AntDomComponentBase
         private bool _hasClosed;
 
         private bool _hasRendered;
+        private int _tabIndex;
 
         protected override void OnInitialized()
         {
@@ -102,7 +99,7 @@ protected override void OnAfterRender(bool firstRender)
         {
             base.OnAfterRender(firstRender);
 
-            if (IsTab && HasTabTitle)
+            if (HasTabTitle)
             {
                 _hasRendered = true;
             }
@@ -133,11 +130,6 @@ private void SetClass()
                 ;
         }
 
-        internal void SetKey(string key)
-        {
-            Key = key;
-        }
-
         internal void SetActive(bool isActive)
         {
             if (_isActive != isActive)
@@ -147,6 +139,11 @@ internal void SetActive(bool isActive)
             }
         }
 
+        internal void SetIndex(int index)
+        {
+            _tabIndex = index;
+        }
+
         internal void Close()
         {
             _hasClosed = true;
@@ -163,32 +160,7 @@ protected override void Dispose(bool disposing)
 
         internal void ExchangeWith(TabPane other)
         {
-            var temp = other.Clone();
-            other.SetPane(this);
-            this.SetPane(temp);
-        }
-
-        private TabPane Clone()
-        {
-            return new TabPane
-            {
-                Key = Key,
-                Tab = this.Tab,
-                TabTemplate = this.TabTemplate,
-                Disabled = this.Disabled,
-                Closable = this.Closable,
-            };
-        }
-
-        private void SetPane(TabPane tabPane)
-        {
-            Key = tabPane.Key;
-            Tab = tabPane.Tab;
-            TabTemplate = tabPane.TabTemplate;
-            Disabled = tabPane.Disabled;
-            Closable = tabPane.Closable;
-
-            StateHasChanged();
+            (_tabIndex, other._tabIndex) = (other._tabIndex, _tabIndex);
         }
 
         private Task HandleKeydown(KeyboardEventArgs e)
diff --git a/components/tabs/Tabs.razor b/components/tabs/Tabs.razor
index f59dec98dc..2758227760 100644
--- a/components/tabs/Tabs.razor
+++ b/components/tabs/Tabs.razor
@@ -1,78 +1,100 @@
 @namespace AntDesign
+@using Microsoft.AspNetCore.Components.Rendering
 @inherits AntDomComponentBase
 
 <CascadingValue Value="this" IsFixed="@true">
-	<div class="@ClassMapper.Class" style="@Style" id="@Id">
-		<!--Tab bar-->
-		<div role="tablist" class="@_tabBarClassMapper.Class" style="@TabBarStyle">
 
-			@if (TabBarExtraContentLeft != null)
-			{
-				<div class="ant-tabs-extra-content">
-					  @TabBarExtraContentLeft
-				</div>
-			}
+    @ChildContent
 
-			<div class="@_tabsNavWarpPingClassMapper.Class" @ref="@_navWarpRef" id="@(Id)-nav-warpper">
-				<div class="ant-tabs-nav-list" style="@_navListStyle" @ref="@_navListRef" id="@(Id)-nav-list">
-					<CascadingValue Value="true" Name="IsTab" IsFixed="true">
-						@ChildContent
-					</CascadingValue>
-					@if (HasAddButton)
-					{
-						<button type="button" class="ant-tabs-nav-add" aria-label="Add tab" @onclick="OnAddClick">
-							<Icon Type="plus" />
-						</button>
-					}
-					<div class="@_inkClassMapper.Class" style="@_inkStyle"></div>
-				</div>
-			</div>
-			<Dropdown OnVisibleChange="OnVisibleChange">
-				<Overlay>
-					<ul tabindex="0" class="ant-tabs-dropdown-menu ant-tabs-dropdown-menu-root ant-tabs-dropdown-menu-vertical" id="@($"rc-tabs-{Id}-more-popup")" role="listbox" aria-label="expanded dropdown">
-						@foreach (var pane in _invisibleTabs)
-						{
-							<li class="ant-tabs-dropdown-menu-item @(pane.Disabled?$"ant-tabs-dropdown-menu-item-disabled":string.Empty)" id="@($"rc-tabs-{Id}-more-popup-{pane.Key}")" role="option" aria-disabled="false" aria-selected="false" aria-controls="@($"rc-tabs-{Id}-more-popup-{pane.Key}")"
-							    @onclick="(e)=>HandleTabClick(pane)">
-                                @if (pane.TabTemplate != null)
-                                {
-                                    @pane.TabTemplate
-                                }
-                                else
-                                {
-                                    @pane.Tab
-                                }
-                            </li>
-						}
-					</ul>
-				</Overlay>
-				<Unbound>
-					<div @ref="context.Current" class="@_operationClass" @onclick:preventDefault>
-						<button tabindex="-1" class="ant-tabs-nav-more" id="rc-tabs-0-more" aria-expanded="false" aria-haspopup="listbox" aria-hidden="true" aria-controls="rc-tabs-0-more-popup"
-								style="@_operationStyle" type="button">
-							<Icon Type="ellipsis" />
-						</button>
-					</div>
-				</Unbound>
-			</Dropdown>
+    <Template>
+        @{
+            this.Complete();
+            if (Card is null)
+            {
+                @RenderTabs
+            }
+        }
+    </Template>
+</CascadingValue>
 
-	  		@if (TabBarExtraContent != null || TabBarExtraContentRight != null || (Card?.Extra != null && Card?.Title == null && Card?.TitleTemplate == null))
-			{
-				<div class="ant-tabs-extra-content">
-					@(TabBarExtraContent ?? TabBarExtraContentRight ?? Card?.Extra)
-				</div>
-			}
-		</div>
-		<!--Tab content-->
-		@if (Card == null)
-		{
-			<div class="ant-tabs-content-holder ">
-				<div class="@_contentClassMapper.Class">
-					<CascadingValue Value="true" Name="IsPane" IsFixed="true">
-						@ChildContent
-					</CascadingValue>
-				</div>
-			</div>
-		}
-	</div>
-</CascadingValue>
\ No newline at end of file
+@code {
+    internal void RenderTabs(RenderTreeBuilder __builder)
+    {
+        <div class="@ClassMapper.Class" style="@Style" id="@Id">
+            <!--Tab bar-->
+            <div role="tablist" class="@_tabBarClassMapper.Class" style="@TabBarStyle">
+
+                @if (TabBarExtraContentLeft != null)
+                {
+                    <div class="ant-tabs-extra-content">
+                        @TabBarExtraContentLeft
+                    </div>
+                }
+
+                <div class="@_tabsNavWarpPingClassMapper.Class" @ref="@_navWarpRef" id="@(Id)-nav-warpper">
+                    <div class="ant-tabs-nav-list" style="@_navListStyle" @ref="@_navListRef" id="@(Id)-nav-list">
+                        @foreach (var tab in _tabs.OrderBy(x => x.TabIndex))
+                        {
+                            @tab.RenderTab
+                        }
+                        @if (HasAddButton)
+                        {
+                            <button type="button" class="ant-tabs-nav-add" aria-label="Add tab" @onclick="OnAddClick">
+                                <Icon Type="plus" />
+                            </button>
+                        }
+                        <div class="@_inkClassMapper.Class" style="@_inkStyle"></div>
+                    </div>
+                </div>
+                <Dropdown OnVisibleChange="OnVisibleChange">
+                    <Overlay>
+                        <ul tabindex="0" class="ant-tabs-dropdown-menu ant-tabs-dropdown-menu-root ant-tabs-dropdown-menu-vertical" id="@($"rc-tabs-{Id}-more-popup")" role="listbox" aria-label="expanded dropdown">
+                            @foreach (var pane in _invisibleTabs)
+                            {
+                                <li class="ant-tabs-dropdown-menu-item @(pane.Disabled?$"ant-tabs-dropdown-menu-item-disabled":string.Empty)" id="@($"rc-tabs-{Id}-more-popup-{pane.Key}")" role="option" aria-disabled="false" aria-selected="false" aria-controls="@($"rc-tabs-{Id}-more-popup-{pane.Key}")"
+                                    @onclick="(e)=>HandleTabClick(pane)">
+                                    @if (pane.TabTemplate != null)
+                                    {
+                                        @pane.TabTemplate
+                                    }
+                                    else
+                                    {
+                                        @pane.Tab
+                                    }
+                                </li>
+                            }
+                        </ul>
+                    </Overlay>
+                    <Unbound>
+                        <div @ref="context.Current" class="@_operationClass" @onclick:preventDefault>
+                            <button tabindex="-1" class="ant-tabs-nav-more" id="rc-tabs-0-more" aria-expanded="false" aria-haspopup="listbox" aria-hidden="true" aria-controls="rc-tabs-0-more-popup"
+                                    style="@_operationStyle" type="button">
+                                <Icon Type="ellipsis" />
+                            </button>
+                        </div>
+                    </Unbound>
+                </Dropdown>
+
+                @if (TabBarExtraContent != null || TabBarExtraContentRight != null || (Card?.Extra != null && Card?.Title == null && Card?.TitleTemplate == null))
+                {
+                    <div class="ant-tabs-extra-content">
+                        @(TabBarExtraContent ?? TabBarExtraContentRight ?? Card?.Extra)
+                    </div>
+                }
+            </div>
+            <!--Tab content-->
+            @if (Card == null)
+            {
+                <div class="ant-tabs-content-holder ">
+                    <div class="@_contentClassMapper.Class">
+                        @foreach (var pane in _tabs)
+                        {
+                            @pane.RenderPane
+                        }
+                    </div>
+                </div>
+            }
+        </div>
+
+    }
+}
\ No newline at end of file
diff --git a/components/tabs/Tabs.razor.cs b/components/tabs/Tabs.razor.cs
index 0c205881bf..a1788a32ab 100644
--- a/components/tabs/Tabs.razor.cs
+++ b/components/tabs/Tabs.razor.cs
@@ -213,7 +213,6 @@ public string ActiveKey
         private const string PrefixCls = "ant-tabs";
         private bool IsHorizontal => TabPosition.IsIn(TabPosition.Top, TabPosition.Bottom);
 
-        private TabPane _activePane;
         private TabPane _activeTab;
         private HtmlElement _activeTabElement;
         private Dictionary<string, HtmlElement> _itemRefs;
@@ -244,7 +243,6 @@ public string ActiveKey
         private readonly ClassMapper _tabsNavWarpPingClassMapper = new ClassMapper();
         private readonly ClassMapper _tabBarClassMapper = new ClassMapper();
 
-        private readonly List<TabPane> _panes = new List<TabPane>();
         private readonly List<TabPane> _tabs = new List<TabPane>();
         private List<TabPane> _invisibleTabs = new List<TabPane>();
 
@@ -298,15 +296,11 @@ protected override void OnInitialized()
             _tabBarClassMapper
                 .Add($"{PrefixCls}-nav")
                 .If(TabBarClass, () => !string.IsNullOrWhiteSpace(TabBarClass));
-        }
 
-        protected override Task OnFirstAfterRenderAsync()
-        {
             if (Card is not null)
             {
-                this.Complete();
+                Card.SetTabs(RenderTabs);
             }
-            return base.OnFirstAfterRenderAsync();
         }
 
         /// <summary>
@@ -317,42 +311,15 @@ protected override Task OnFirstAfterRenderAsync()
         /// <exception cref="ArgumentException">An AntTabPane with the same key already exists</exception>
         internal void AddTabPane(TabPane tabPane)
         {
-            if (tabPane.IsTab)
-            {
-                _tabs.Add(tabPane);
-                if (Card is not null)
-                {
-                    _panes.Add(tabPane);
-                }
-            }
-            else
-            {
-                _panes.Add(tabPane);
-            }
-
-            if (string.IsNullOrWhiteSpace(tabPane.Key))
-            {
-                if (tabPane.IsTab)
-                {
-                    tabPane.SetKey($"ant-tabs-{_tabs.Count}");
-                }
-                else
-                {
-                    tabPane.SetKey(_tabs[_panes.Count - 1].Key);
-                }
-            }
-
-            if (_tabs.Count == _panes.Count && Card is null)
-            {
-                this.Complete();
-            }
+            tabPane.SetIndex(_tabs.Count);
+            _tabs.Add(tabPane);
         }
 
         internal void Complete()
         {
             if (!string.IsNullOrWhiteSpace(ActiveKey))
             {
-                var activedPane = _panes.Find(x => x.Key == ActiveKey);
+                var activedPane = _tabs.Find(x => x.Key == ActiveKey);
                 if (activedPane?.IsActive == false)
                 {
                     ActivatePane(activedPane.Key);
@@ -360,16 +327,16 @@ internal void Complete()
             }
             else if (!string.IsNullOrWhiteSpace(DefaultActiveKey))
             {
-                var defaultPane = _panes.FirstOrDefault(x => x.Key == DefaultActiveKey);
+                var defaultPane = _tabs.FirstOrDefault(x => x.Key == DefaultActiveKey);
                 if (defaultPane != null)
                 {
                     ActivatePane(defaultPane.Key);
                 }
             }
 
-            if (_activePane == null || _panes.All(x => !x.IsActive))
+            if (_activeTab == null || _tabs.All(x => !x.IsActive))
             {
-                ActivatePane(_panes.FirstOrDefault()?.Key);
+                ActivatePane(_tabs.FirstOrDefault()?.Key);
             }
 
             if (AfterTabCreated.HasDelegate)
@@ -377,7 +344,8 @@ internal void Complete()
                 AfterTabCreated.InvokeAsync(_activeKey);
             }
 
-            _needUpdateScrollListPosition = true;
+            // Only update scroll list position once the tabs have not been rendered
+            _needUpdateScrollListPosition = !_afterFirstRender;
         }
 
         public async Task RemoveTab(TabPane tab)
@@ -386,10 +354,8 @@ public async Task RemoveTab(TabPane tab)
             {
                 var tabKey = tab.Key;
                 var index = _tabs.IndexOf(tab);
-                var pane = _panes.Find(x => x.Key == tab.Key);
 
                 tab.Close();
-                pane.Close();
 
                 if (OnClose.HasDelegate)
                 {
@@ -404,22 +370,7 @@ internal void RemovePane(TabPane tab)
             if (IsDisposed)
                 return;
 
-            if (tab.IsTab)
-            {
-                var index = _tabs.IndexOf(tab);
-
-                _tabs.Remove(tab);
-
-                if (tab.IsActive && _tabs.Count > 0)
-                {
-                    var p = index > 1 ? _tabs[index - 1] : _tabs[0];
-                    ActivatePane(p.Key);
-                }
-            }
-            else
-            {
-                _panes.Remove(tab);
-            }
+            _tabs.Remove(tab);
 
             _needUpdateScrollListPosition = true;
         }
@@ -459,35 +410,31 @@ private async Task NavigateToTab(TabPane tabPane)
 
         private void ActivatePane(string key)
         {
-            if (_panes.Count == 0)
+            if (_tabs.Count == 0)
                 return;
 
             var tabIndex = _tabs.FindIndex(p => p.Key == key);
             var tab = _tabs.Find(p => p.Key == key);
-            var tabPane = _panes.Find(p => p.Key == key);
 
-            if (tab == null || tabPane == null)
+            if (tab == null)
                 return;
 
             // Even if a TabPane is disabled, it is allowed to be activated at initial load time (at initial load time, _activeTab is null)
             // fixed https://github.com/ant-design-blazor/ant-design-blazor/issues/2732
-            if (_activeTab != null && tabPane.Disabled)
+            if (_activeTab != null && tab.Disabled)
             {
                 return;
             }
 
-            _activePane?.SetActive(false);
             _activeTab?.SetActive(false);
 
             tab.SetActive(true);
-            tabPane.SetActive(true);
 
             _activeTab = tab;
-            _activePane = tabPane;
 
-            if (_activeKey != _activePane.Key)
+            if (_activeKey != _activeTab.Key)
             {
-                _activeKey = _activePane.Key;
+                _activeKey = _activeTab.Key;
                 if (ActiveKeyChanged.HasDelegate)
                 {
                     ActiveKeyChanged.InvokeAsync(_activeKey);
@@ -495,11 +442,24 @@ private void ActivatePane(string key)
             }
             if (OnChange.HasDelegate)
             {
-                OnChange.InvokeAsync(_activePane.Key);
+                OnChange.InvokeAsync(_activeTab.Key);
             }
             TryRenderInk();
 
-            Card?.SetBody(_activePane.ChildContent);
+            Card?.SetBody(_activeTab.ChildContent);
+
+            // render the classname of the actived tab
+            // Needs to be optimized to render only one tab instead all the tabs
+            StateHasChanged();
+        }
+
+        public override Task SetParametersAsync(ParameterView parameters)
+        {
+            if (parameters.IsParameterChanged(nameof(TabPosition), TabPosition))
+            {
+                _needUpdateScrollListPosition = true;
+            }
+            return base.SetParametersAsync(parameters);
         }
 
         protected override async Task OnAfterRenderAsync(bool firstRender)
@@ -527,6 +487,11 @@ protected override void OnParametersSet()
             _shouldRender = true;
         }
 
+        protected override bool ShouldRender()
+        {
+            return _shouldRender || _renderedActivePane != _activeTab;
+        }
+
         private async Task ResetSizes()
         {
             ElementReference[] refs = [_navListRef, _navWarpRef, .. _tabs.Select(x => x.TabRef).ToArray()];
@@ -601,7 +566,7 @@ private void OnWheel(string json)
             SetNavListStyle();
 
             StateHasChanged();
-            _renderedActivePane = _activePane;
+            _renderedActivePane = _activeTab;
         }
 
         private void SetNavListStyle()
@@ -625,23 +590,28 @@ private void SetNavListStyle()
 
         private void TryRenderInk()
         {
-            if (!_afterFirstRender)
+            if (_itemRefs is not { Count: > 0 })
             {
-                _needUpdateScrollListPosition = true;
-                StateHasChanged();
                 return;
             }
-
-            if (_itemRefs is not { Count: > 0 })
+            if (!_itemRefs.TryGetValue(_activeTab.TabId, out _activeTabElement))
             {
                 return;
             }
-            if (!_itemRefs.TryGetValue(_activeTab.TabId, out _activeTabElement))
+
+            // the tabs maybe inside other components like modal, it can't get the element info at the first time
+            // so here is retrying to get the element info again.
+            // Fixed https://github.com/ant-design-blazor/ant-design-blazor/issues/4061
+            if (_activeTabElement.ClientWidth <= 0 || _activeTabElement.ClientHeight <= 0)
             {
+                _needUpdateScrollListPosition = true;
+                StateHasChanged();
                 return;
             }
+
             if (IsHorizontal)
             {
+
                 _inkStyle = $"left: {_activeTabElement.OffsetLeft}px; width: {_activeTabElement.ClientWidth}px";
 
                 var additionalWidth = HasAddButton ? _addBtnWidth : 0;
@@ -677,14 +647,16 @@ private void TryRenderInk()
                 }
             }
 
-            _shouldRender = true;
-            StateHasChanged();
-            _renderedActivePane = _activePane;
-        }
-
-        protected override bool ShouldRender()
-        {
-            return _shouldRender || _renderedActivePane != _activePane;
+            if (Card is not null)
+            {
+                Card.InvokeStateHasChagned();
+            }
+            else
+            {
+                _shouldRender = true;
+                StateHasChanged();
+            }
+            _renderedActivePane = _activeTab;
         }
 
         internal void UpdateTabsPosition()
@@ -773,6 +745,7 @@ internal void HandleDrop(TabPane tab)
                 _draggingTab = null;
                 _shouldRender = true;
                 _renderedActivePane = null;
+                _needUpdateScrollListPosition = true;
 
                 ActivatePane(_activeKey);
             }
@@ -784,7 +757,6 @@ protected override void Dispose(bool disposing)
         {
             DomEventListener.DisposeExclusive();
 
-            _panes.Clear();
             _tabs.Clear();
             _invisibleTabs.Clear();
 
diff --git a/site/AntDesign.Docs/Demos/Components/Card/demo/Tabs1.razor b/site/AntDesign.Docs/Demos/Components/Card/demo/Tabs1.razor
index 5fe6c67ce6..29644268b8 100644
--- a/site/AntDesign.Docs/Demos/Components/Card/demo/Tabs1.razor
+++ b/site/AntDesign.Docs/Demos/Components/Card/demo/Tabs1.razor
@@ -3,7 +3,7 @@
         <Extra>
             <a>More</a>
         </Extra>
-        <CardTabs>
+        <ChildContent>
             <Tabs DefaultActiveKey="1">
                 <TabPane Key="1">
                     <TabTemplate>Tab 1</TabTemplate>
@@ -18,7 +18,7 @@
                     <ChildContent>Content of Tab Pane 3</ChildContent>
                 </TabPane>
             </Tabs>
-        </CardTabs>
+        </ChildContent>
     </Card>
     <br />
     <br />
@@ -26,24 +26,22 @@
         <Extra>
             <a>More</a>
         </Extra>
-        <CardTabs>
+        <ChildContent>
             <Tabs DefaultActiveKey="1">
-                <ChildContent>
-                    <TabPane Key="1">
-                        <TabTemplate>Article</TabTemplate>
-                        <ChildContent>Content of Tab Pane 1</ChildContent>
-                    </TabPane>
-                    <TabPane Key="2">
-                        <TabTemplate>App</TabTemplate>
-                        <ChildContent>Content of Tab Pane 2</ChildContent>
-                    </TabPane>
-                    <TabPane Key="3">
-                        <TabTemplate>Project</TabTemplate>
-                        <ChildContent>Content of Tab Pane 3</ChildContent>
-                    </TabPane>
-                </ChildContent>
+                <TabPane Key="1">
+                    <TabTemplate>Article</TabTemplate>
+                    <ChildContent>Content of Tab Pane 1</ChildContent>
+                </TabPane>
+                <TabPane Key="2">
+                    <TabTemplate>App</TabTemplate>
+                    <ChildContent>Content of Tab Pane 2</ChildContent>
+                </TabPane>
+                <TabPane Key="3">
+                    <TabTemplate>Project</TabTemplate>
+                    <ChildContent>Content of Tab Pane 3</ChildContent>
+                </TabPane>
             </Tabs>
-        </CardTabs>
+        </ChildContent>
     </Card>
 </div>
 


Test patch:
diff --git a/tests/AntDesign.Tests/Card/Card.Render.Tests.razor b/tests/AntDesign.Tests/Card/Card.Render.Tests.razor
index 2bdd0e7d2c..6cae955159 100644
--- a/tests/AntDesign.Tests/Card/Card.Render.Tests.razor
+++ b/tests/AntDesign.Tests/Card/Card.Render.Tests.razor
@@ -34,18 +34,16 @@
         JSInterop.Setup<Dictionary<string, HtmlElement>>("AntDesign.interop.domInfoHelper.getElementsInfo", _ => true);
         var cut = Render<AntDesign.Card>(
             @<Card Title=@("Card title")>        
-                <CardTabs>
-                    <Tabs DefaultActiveKey="1">
-                        <TabPane Key="1">
-                            <TabTemplate>Tab 1</TabTemplate>
-                            <ChildContent>Content of Tab Pane 1</ChildContent>
-                        </TabPane>
-                        <TabPane Key="2">
-                            <TabTemplate>Tab 2</TabTemplate>
-                            <ChildContent>Content of Tab Pane 2</ChildContent>
-                        </TabPane>
-                    </Tabs>
-                </CardTabs>
+                <Tabs DefaultActiveKey="1">
+                    <TabPane Key="1">
+                        <TabTemplate>Tab 1</TabTemplate>
+                        <ChildContent>Content of Tab Pane 1</ChildContent>
+                    </TabPane>
+                    <TabPane Key="2">
+                        <TabTemplate>Tab 2</TabTemplate>
+                        <ChildContent>Content of Tab Pane 2</ChildContent>
+                    </TabPane>
+                </Tabs>
             </Card>
     );
         //Act
@@ -95,21 +93,19 @@
         JSInterop.Setup<HtmlElement>(JSInteropConstants.DomInfoHelper.GetInfo, _ => true).SetResult(new());
         JSInterop.Setup<Dictionary<string, HtmlElement>>("AntDesign.interop.domInfoHelper.getElementsInfo", _ => true);
         var cut = Render<AntDesign.Card>(
-            @<Card Title=@("Card title")>        
-                <CardTabs>
-                    <Tabs DefaultActiveKey="1">
-                        <TabPane Key="1">
-                            <TabTemplate>Tab 1</TabTemplate>
-                            <ChildContent>Content of Tab Pane 1</ChildContent>
-                        </TabPane>
-                        <TabPane Key="2">
-                            <TabTemplate>Tab 2</TabTemplate>
-                            <ChildContent>Content of Tab Pane 2</ChildContent>
-                        </TabPane>
-                    </Tabs>
-                </CardTabs>
-    </Card>
-    );
+            @<Card Title=@("Card title")>
+                <Tabs DefaultActiveKey="1">
+                    <TabPane Key="1">
+                        <TabTemplate>Tab 1</TabTemplate>
+                        <ChildContent>Content of Tab Pane 1</ChildContent>
+                    </TabPane>
+                    <TabPane Key="2">
+                        <TabTemplate>Tab 2</TabTemplate>
+                        <ChildContent>Content of Tab Pane 2</ChildContent>
+                    </TabPane>
+                </Tabs>
+            </Card>
+        );
         //Act
         var tab2 = cut.FindAll("div.ant-tabs-tab")[1];
         tab2.Click();
diff --git a/tests/AntDesign.Tests/tabs/TabsTests.cs b/tests/AntDesign.Tests/tabs/TabsTests.cs
index 666ac7cbb0..099ca63f69 100644
--- a/tests/AntDesign.Tests/tabs/TabsTests.cs
+++ b/tests/AntDesign.Tests/tabs/TabsTests.cs
@@ -25,9 +25,9 @@ public partial class TabsTests : AntDesignTestBase
             jsRuntime.Setup(u => u.InvokeAsync<Dictionary<string, HtmlElement>>(JSInteropConstants.GetElementsDomInfo, It.IsAny<object[]>()))
                 .ReturnsAsync(new Dictionary<string, HtmlElement>()
                 {
-                    ["1-nav-list"] = new HtmlElement() { },
-                    ["1-nav-warpper"] = new HtmlElement() { },
-                    ["rc-tabs-2-tab-2"] = new HtmlElement() { },
+                    ["1-nav-list"] = new HtmlElement() { ClientWidth = 45, ClientHeight = 45, },
+                    ["1-nav-warpper"] = new HtmlElement() { ClientWidth = 45, ClientHeight = 45, },
+                    ["rc-tabs-2-tab-2"] = new HtmlElement() { ClientWidth = 45, ClientHeight = 45, },
                 });
 
             Context.Services.AddScoped(_ => jsRuntime.Object);