Bug#1000200: reportbug-gtk: cannot close reportbug (on fluxbox)

control: reassign -1 reportbug-gtk
control: severity -1 important
control: tags -1 - moreinfo


> Update: The bug was introduced with the upload of python3.9 3.9.8-1 to
> unstable on 7 November. Downgrading python3.9 to version 3.9.7-4 fixes
> the problem.
> 
> Next tasks: Identify which change between python 3.9.7 and 3.9.8 is
> responsible, and find out which package needs to change to fix the problem.

The broken code is in reportbug. Reassigning back.

This bug is a case of broken code being exposed by a bug fix elsewhere.
Reportbug was trying to use sys.exit() to exit the program, which does
not work reliably when threading is involved as in the GTK UI. Due to a
bug in python it had only appeared to work.