It looks like some kind of timing triggers it.
I'm able to (sometimes) reproduce it when running ubuntu-bug, but not when running firefox directly.
I've tried to debug using strace, but I haven't been able to reproduce it using the -f option. Attached is output of strace -F -tt ubuntu-bug 2>strace-ubuntu-bug.log.
I've not been able to reproduce it from gdb, the program always exits normally.
It looks like some kind of timing triggers it.
I'm able to (sometimes) reproduce it when running ubuntu-bug, but not when running firefox directly.
I've tried to debug using strace, but I haven't been able to reproduce it using the -f option. Attached is output of strace -F -tt ubuntu-bug 2>strace- ubuntu- bug.log.
I've not been able to reproduce it from gdb, the program always exits normally.