Your saying the Taskbar is not displaying correctly, but you think it's a browser issue. Interesting... Let me boot my Win11 computer and see if I can replicate. Did you test this issue with a different browser?

All other labels for the rest of my apps seem to work as they should. It’s just Firefox that isn’t. So that’s why I think it’s a Firefox issue. I’ve also reproduced the issue on 3 different computers. I still could be wrong though I suppose.

I see the issue, but it will be interesting to find out who's responsible for how the app shows on the taskbar.

I hope it is Firefox so there is actually hope in getting it resolved! :) But as far as bugs go, this is not a big or highly impactful one. Just something I noticed. Thanks for verifying on your end.

Definitely looks bugish, but someone closer to Dev will need to chime in. There could be some setting in about:config. I installed Chrome and it shows a label with no other apps open.

Yep, I haven’t found another program yet that has the same issue.

If you're feeling bugish, go open one and see what the Devs have to say. https://bugzilla.mozilla.org/home

Setting browser.startup.blankWindow to false seems to solve the issue for now.

For others having a similar problem , I cured my annoyance ( same thing , Firefox task bar badge appearing blank ) by right clicking on desktop badge and selecting " pin to Start menu " and then going to the start menu , right clicking on Firefox entry and selecting " pin to task bar " which worked and has stayed working since

     Ashrich