I can't understand what this is about. the screenshot looks like belongs to process explorer or some similar tools. Run msedge > visit any site, open a few more tabs? fine. Alt+Tab ? ok Windows 10 shows me all of the open program Windows. what's the problem? I don't see any strange behavior or any special feature that you are demanding to remove. I'm Not using keepass but if you have any problem with that extension i think they need to fix it at their end. specially when this is a very specific issue in a single extension among millions of others. and this ability of keepass isn't even it's main feature so.
The issue appears to have been that the title of the Window somehow interfered with his automation. He wanted each tab to be listed separately in the Task bar though I have never heard of that being a thing other than in Internet Explorer.