Created on April 20, 2016

Are you sure windows 11?

Did u modify registry to get old right click context menu back? I had similar problem after using online guide to modify registry to get old context menu back for sake of convenience . However it seems to destabilize new taskbar so I had to undo the registry and everything back to normal. Guess I had to wait for developer like 7zip and notepad++ to add support to new context menu like winrar and nanazip.

After upgrade my firefox run fine ;can't comment about opera since I do not use it. My advise will be try backup ur browser setting and then reinstall them on win 11.

Another noticeable minor bug  for taskbar is when u hover over it will not display battery estimated remaining time but it was found in settings. Furthermore, when u hover over to blank space taskbar it will show some popup like speaker or volume if hover to those icons before.