Created attachment 866128 [details]
screen shot

I have added firefox to the autostart applications in .config/autostart.

After update to GNOME 44, firefox reproducibly starts up with an unusable
window.

I have observed different phenomena. Most of the time the firefox window is
transparent; basically only the window title bar is visible. Attempts to move
or resize the window result in graphical artifacts. Sometimes the window is
visible, but solid grey.

If if kill and restart firefox, the issue is gone, and firefox works normally.

I notice this message in the log:

> Apr 05 10:25:30.955458 apollon.suse.de firefox.desktop[12229]: ATTENTION: default value of option mesa_glthread overridden by environment.

But it is also displayed when I start firefox manually.