Running Thunderbird on Fedora 32 / Wayland / Sway, Thunderbird often seems to freeze for a while when for example selecting a bunch of emails and dragging them to a different folder (also happens with changing the folder and other actions). Sometimes it recovers, but occasionally TB then crashes. Often when it crashes once, it will also crash pretty shortly again after a while, but it seems that later it works pretty fine again.

The exit message is usually "Gdk-Message: 13:33:45.439: Lost connection to Wayland compositor.". I think it has sometimes been something else, but similar. My Firefox instances also crash sometimes in a similar way, but they work fine after restarting them.

I realise this won't be enough to figure out what's happening, but what should I do to help debug this?

I can confirm that Thunderbird crashes way too often on Wayland/Sway with Arch Linux. The crashing is nearly at the point where the application appears unusable.

Originally I thought it was because I was closing the whole new window Thunderbird was opening due to another super-annoying Thunderbird@Wayland bug 1564839 - but it's not the case even if I leave those be randomly opened at me.

Stanislav, still seeing this? Do you see problems with Firefox?

maybe https://github.com/swaywm/sway/issues/6292 ?

Yes, Wayne, although I believe it is now solely caused by me closing the the notification desktop when Thunderbird tries to notify me.

Basically, I have two options:

1. either be annoyed by Thunderbird randomly popping a notification window on half or full screen, depending on my current Sway layout
2. be annoyed by Thunderbird crashing randomly as I'm trying to get to my emails

So far I've chosen 2 as the lesser evil.

Unfortunately, there are not that many GUI alternatives that provide the amount of functionality Thunderbird does, so I'm kind of willing to suffer. Sure, I could just use it in XWayland mode but where's the progress in that.

bug 1729590 also reports hangs with notifications

Stanislav, does this still reprodue for you?

Turns out that the way to solve this was to install an external notification manager. mako - https://github.com/emersion/mako - seems to work quite well for me.

Hopefully this will help other people dealing with the same issue.

Resolved per whiteboard