[Pkg-ayatana-devel] Bug#1105818: Bug#1107671: blueman-manager fails to start and segfaults on wayland

[Christopher Schramm]

Thanks for the data!

It looks like this is a general issue somewhere between GTK+ 3 and that 
appmenu-gtk-module and has nothing to do with either Debian or blueman 
specifically.

I could easily reproduce it in a Manjaro VM by running Wayland and 
starting either of the following applications with the module enabled:

* blueman
* gimp
* transmission-gtk (version 3, as 4 uses GTK 4)

The traces show an insane stack of gtk_css_node_ensure_style frames. 
There are probably many more GTK+ 3 applications out there, that can 
trigger the issue, but, supposedly, it depends on some specific structure.

References:

https://gitlab.gnome.org/GNOME/gimp/-/issues/11564 for GIMP

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1036775 for transmission

While the cause is most probably somewhere in that appmenu-gtk-module, I 
can image that 
https://gitlab.gnome.org/GNOME/gtk/-/commit/fc823eb61002d1350305cba6ec718a7c4f6c05e1 
covered it, so that GTK 4 is not affected by the crashes.

Workarounds include excluding appmenu-gtk-module from GTK_MODULES or 
setting GDK_BACKEND=x11.

Regards