Sometimes this is our fault - there's a bug with our command line where it doesn't close properly and can steal focus (particularly `tabopen about:addons`). I am sorry about that. We're working on tearing it out and starting again as the command line has lots of problems.

Otherwise, it's usually YouTube. I just only interact with the videos using the mouse (or MPV via `;v`) and make sure to click outside them afterwards.

I do have a trackpoint on all of my keyboards, so I don't really notice having to click the mouse because it's just another keyboard button, so I might not be the most representative person here.

I don't think it's just that bug. I have a userstyle to mark the displayed element, so I sometimes see when something is grabing the focus, and neither tab nor ESC or Alt-l helps in those cases. But after some reseach I found out F6 can help there. Till now I thought it's just the same as Alt-l and only focus the addressbar, but turns out it can also unfocus it and switch focus between the different areas of firefox. I tested it in the last hour and it really worked in several cases where I was stuck in focus-hell.