I recognized a different behavior between Windows 10 and 11 today.
I use Opus in dual lister view.
Windows 10: Taskbar shows only one icon (so you can easily maximize and minimze via taskbar)
Windows 11: Taskbar shows two icons in a group (so you have to choose on side of the lister to maximize Opus)
See:
At the moment I do not know which behavior is better, but e.g. for browsers I deactivated this "see all tabs separately in the taskbar".
Is this change intended and is there a setting to change it?