This sounds similar to the behaviour of Internet Explorer on Windows 10 (which always felt weird). If you have two tabs open in IE, they appear as two separate

This sounds similar to the behaviour of Internet Explorer on Windows 10 (which always felt weird). If you have two tabs open in IE, they appear as two separate windows when clicking the icon in the taskbar. Edge behaves as expected where two tabs -> one window -> one click but it seems like they just regressed as a whole for Windows 11.