Control: severity -1 normal thanks Downgrading as workaround available.
On Sun, Feb 22, 2026 at 12:41:26PM +0000, Simon McVittie wrote: > On Sun, 22 Feb 2026 at 13:20:16 +0100, Marc Haber wrote: > > Starting thunderbird gives the following console messsages: > ... > > I then open a new message and click on "attach". Thunderbird crashes > > reliably, > > > > WARNING: Glycin running without sandbox. > > WARNING: Glycin running without sandbox. > > ** > > Gtk:ERROR:../../../gtk/gtkiconhelper.c:495:ensure_surface_for_gicon: > > assertion failed (error == NULL): Failed to load > > /usr/share/icons/breeze-dark/status/16/image-missing.svg: Could not spawn > > `env -i XDG_RUNTIME_DIR="/run/user/1001" > > "/usr/libexec/glycin-loaders/2+/glycin-svg" "--dbus-fd" "122"`: Permission > > denied (os error 13) (gdk-pixbuf-error-quark, 0) > > Bail out! > > Gtk:ERROR:../../../gtk/gtkiconhelper.c:495:ensure_surface_for_gicon: > > assertion failed (error == NULL): Failed to load > > /usr/share/icons/breeze-dark/status/16/image-missing.svg: Could not spawn > > `env -i XDG_RUNTIME_DIR="/run/user/1001" > > "/usr/libexec/glycin-loaders/2+/glycin-svg" "--dbus-fd" "122"`: Permission > > denied (os error 13) (gdk-pixbuf-error-quark, 0) > > This is another symptom of the same root cause as > <https://bugs.debian.org/1127710>: thunderbird's AppArmor profile prevents > gdk-pixbuf / glycin / bwrap from working as designed, by denying permission > to do operations that they need. A workaround is to put thunderbird's > AppArmor profile in "complain" (non-enforcing) mode, making it no longer a > security boundary: > > aa-complain /etc/apparmor.d/usr.bin.thunderbird > > or disable it completely. Yes, I confirm that this helps. What also helps is GTK_USE_PORTAL=1 (the KDE launcher does that). Greetings Marc
