There could be several reasons why your tab is not showing in Windows 11. One possible reason for this issue is that the tab may have been accidentally closed or minimized. In this case, you can try reopening the tab by clicking on the browser icon in the taskbar and selecting the tab from the list of recently used tabs.
Another possible reason for this issue is that the tab may be hidden due to the settings in your browser. Some browsers have the option to hide tabs when they are not in use or when the browser window is minimized. If this is the case, you can try changing the settings in your browser to unhide the tab.
In some cases, the tab may not be showing due to a glitch or issue with the operating system. You can try restarting your computer or updating Windows to see if this resolves the problem. Additionally, it is always a good idea to check for any updates or patches for your browser to ensure that it is up-to-date and functioning properly.
If none of these solutions resolves the issue, you may need to seek assistance from a technical support professional or the browser/operating system manufacturer for further assistance.