+++ This bug was initially created as a clone of Bug #1798131 +++

I'm using Gnome 3.38 on Debian Stable, and Firefox Nightly 20221213165020.

When I hover the mouse on something with a tooltip (such as a tab in the tab strip, or the hamburger menu), and then switch to another virtual desktop, the tooltip stays displayed and never disappear until I come back to the initial virtual desktop.

This happens with xwayland and without MOZ_GTK_TITLEBAR_DECORATION=system.

Here is a profile with logs: https://share.firefox.dev/3YmuaQi

Indeed I don't see the leave notify log...

(In reply to Julien Wajsberg [:julienw] from comment #1)

Here is a profile with logs: https://share.firefox.dev/3YmuaQi

Indeed I don't see the leave notify log...

In this profile I did 2 things while the tooltip was displayed:

• first I switched my virtual desktop
• then after coming back to the initial desktop, I changed my foreground window with alt-tab.

In both cases the tooltip stayed displayed but I expected that it would go away.

Does it happen with pure x11?

Just tried, and yes it happens with pure x11 as well.

Set release status flags based on info from the regressing bug 1756903

Can you confirm this only happens if you have MOZ_USE_XINPUT2=1 in the environment? I could repro with that.

Yeah I believe you're right.
I definitely have this in my environment.
And when I run with MOZ_USE_XINPUT2=0 then the bug doesn't appear anymore.

Somewhat confusingly I initially ran with MOZ_USE_XINPUT2= (with no value), which (I think) should have also reset the option, but according to the code this does also set the value just like using 1.

(in these tries I always had MOZ_ENABLE_WAYLAND= too, to make sure that I was using xwayland).