Comment 5 for bug 1977715

Created attachment 9280118
lp1977715.txt

User Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.5005.61 Safari/537.36

Steps to reproduce:

On Ubuntu/Jammy, using 1:91.9.1+build1-0ubuntu0.22.04.1, I'm dragging mail from the main INBOX to other (sub)folders. This works, for a couple of moves, but then Thunderbird becomes completely unresponsive and the GNOME window-is-not-responding message pops up.

Actual results:

Thunderbird deadlocks and cannot wake up. Only the Force Quit button works. After which I can restart Thunderbird and resume cleaning of my INBOX.

Expected results:

Thunderbird should just keep running so I can keep moving e-mails to different subfolders.

====

Verbose explanation and debug info here:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1977715
(also attached as lp1977715.txt )

Basically it appears like Wayland has something to do with this.
When starting thunderbird with XDG_SESSION_TYPE=x11 WAYLAND_DISPLAY= it looks like Thunderbird behaves normally and no deadlocks occur.

One of the things that stand out, is that without Wayland enabled, the following messages are not observed on stderr anymore:

> Unsupported modifier, resource creation failed.
> XXX: resource creation failed

But that may be unrelated.