Comment 3 for bug 1969509

Created attachment 9279747
firefoxbug.png

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:101.0) Gecko/20100101 Firefox/101.0

Steps to reproduce:

Ubuntu 21.10
Gnome 42.1, X11
Firefox from snap, reproducible in Nightly build 20220604092742

With title bar hidden:
   maximize Firefox window (by double-click on top bar)
   set it full-screen (by pressing F11 key)
   move cursor to the upper edge of the screen
   double-click the bar

Actual results:

The window ends up in unexpected state. It behaves as fullscreen window but it's not one.

Expected results:

I expect window to stay maximized.