Change:
<!-- Do Not Delete This! bugreporttemplate --<!-- Please read our Rules of Conduct: --<!-- Read our guide about submitting issues: --<!-- Search existing issues to avoid creating duplicates. --<!-- Test using the latest Insiders build to see if your issue has already been fixed: --<!-- Instead of creating your report here, use 'Report Issue' from the 'Help' menu in VS Code to pre-fill useful information. --<!-- Launch with to check. --Does this issue occur when all extensions are disabled?: Yes/No <!-- If you answered No above, use 'Help: Start Extension Bisect' from Command Palette to try to identify the cause. --<!-- Issues caused by an extension need to be reported directly to the extension publisher. The 'Help Report Issue' dialog can assist with this. --- VS Code Version: 1.84.1 OS Version: macOS Sonoma(14.0) Steps to Reproduce: the color theme to high contrast theme will see the activity bar icon size and the border is weird !
pinging

Discussion:
flex: 1; } <ins> .monaco-workbench .part.auxiliarybar > .title > .composite-bar-container > .composite-bar > .monaco-action-bar .action-item:focus, .monaco-workbench .part.auxiliarybar > .header-or-footer > .composite-bar-container > .composite-bar > .monaco-action-bar .action-item:focus { outline: 0 !important; /* activity bar indicates focus custom */ } .monaco-workbench .part.auxiliarybar > .title > .composite-bar-container > .composite-bar > .monaco-action-bar .action-item .action-label, .monaco-workbench .part.auxiliarybar > .header-or-footer > .composite-bar-container > .composite-bar > .monaco-action-bar .action-item .action-label { border-radius: 0px; outline-offset: 2px; } .monaco-workbench .part.auxiliarybar > .title > .composite-bar-container > .composite-bar > .monaco-action-bar .action-item .action-label::before, .monaco-workbench .part.auxiliarybar > .header-or-footer > .composite-bar-container > .composite-bar > .monaco-action-bar .action-item .action-label::before { position: absolute; left: 6px; /* place icon in center */ } </ins> .monaco-workbench .part.auxiliarybar > .header-or-footer > .composite-bar-container > .composite-bar > .monaco-action-bar .action-item.checked:not(:focus) .active-item-indicator:before, .monaco-workbench .part.auxiliarybar > .header-or-footer > .composite-bar-container > .composite-bar > .monaco-action-bar .action-item.checked.clicked:focus .active-item-indicator:before, .monaco-workbench .part.auxiliarybar > .title > .composite-bar-container > .composite-bar > .monaco-action-bar .action-item.checked:not(:focus) .active-item-indicator:before,

.monaco-workbench .pane-composite-part > .title > .composite-bar-container > .composite-bar > .monaco-action-bar .action-item:focus .active-item-indicator:before, .monaco-workbench .pane-composite-part > .header-or-footer > .composite-bar-container > .composite-bar > .monaco-action-bar .action-item:focus .active-item-indicator:before { border-top-color: var(--vscode-focusBorder) !important; <ins> border-top-width: 2px; </ins> } .monaco-workbench .pane-composite-part > .title > .composite-bar-container > .composite-bar > .monaco-action-bar .action-item.checked .action-label,

height: 16px; } <ins> .monaco-workbench .part.sidebar > .title > .composite-bar-container > .composite-bar > .monaco-action-bar .action-item:focus, .monaco-workbench .part.sidebar > .header-or-footer > .composite-bar-container > .composite-bar > .monaco-action-bar .action-item:focus { outline: 0 !important; /* activity bar indicates focus custom */ } .monaco-workbench .part.sidebar > .title > .composite-bar-container > .composite-bar > .monaco-action-bar .action-item .action-label, .monaco-workbench .part.sidebar > .header-or-footer > .composite-bar-container > .composite-bar > .monaco-action-bar .action-item .action-label { border-radius: 0px; outline-offset: 2px; } .monaco-workbench .part.sidebar > .title > .composite-bar-container > .composite-bar > .monaco-action-bar .action-item .action-label::before, .monaco-workbench .part.sidebar > .header-or-footer > .composite-bar-container > .composite-bar > .monaco-action-bar .action-item .action-label::before { position: absolute; left: 6px; /* place icon in center */ } </ins> .monaco-workbench .part.sidebar > .header-or-footer > .composite-bar-container > .composite-bar > .monaco-action-bar .action-item.checked:not(:focus) .active-item-indicator:before, .monaco-workbench .part.sidebar > .header-or-footer > .composite-bar-container > .composite-bar > .monaco-action-bar .action-item.checked.clicked:focus .active-item-indicator:before, .monaco-workbench .part.sidebar > .title > .composite-bar-container > .composite-bar > .monaco-action-bar .action-item.checked:not(:focus) .active-item-indicator:before,