firefox: cannot exit fullscreen

[zaoqi]

Qubes OS version
R4.0

Affected component(s) or functionality

Brief summary

To Reproduce

1. on fedora-30
2. Open firefox
3. Right click the title and click Fullscreen
4. Right click the title and click Exit Fullscreen Mode

Expected behavior
Exit Fullscreen Mode

Actual behavior
cannot exit fullscreen

Screenshots

Additional context

Solutions you've tried

Relevant documentation you've consulted

Related, non-duplicate issues

[andrewdavidwong]

I can also reproduce this on Fedora 30. The Exit Fullscreen Mode menu option appears to be unresponsive (clicking on it does nothing; doesn't even dismiss the context menu).

By contrast, with Chromium, you can also make it go fullscreen by selecting the Fullscreen option from the Xfce title menu. However, in order to "undo" this, you have to double-left-click the top of the window. Right-clicking does nothing.

I'm not sure whether this is actually a Qubes bug.

[iacore]

Using r4.1 with arch linux, cannot reproduce here / works for me.

[marmarta]

Also works for me on fedora-35. Pretty sure it was a FF/Gnome? bug that got fixed at some point.