apport-kde locks up when selecting "Cancel"

[Roger Light]

To reproduce:

* Run "/usr/share/apport/apport-kde -f" from the command line
* Select first entry "Display (X.org)" from the "What kind of problem do you want to report?", then click OK.
* The "What display problem do you observe?" dialogue pops up, I realise that doesn't match anything that I want to report and click Cancel.
* Apport becomes completely unresponsive.

Traceback after Ctrl-C suggests that there is a problem with a thread lock:

Exception ignored in: <module 'threading' from '/usr/lib/python3.7/threading.py'>
Traceback (most recent call last):
  File "/usr/lib/python3.7/threading.py", line 1281, in _shutdown
    t.join()
  File "/usr/lib/python3.7/threading.py", line 1032, in join
    self._wait_for_tstate_lock()
  File "/usr/lib/python3.7/threading.py", line 1048, in _wait_for_tstate_lock
    elif lock.acquire(block, timeout):
KeyboardInterrupt

This is on Kubuntu 19.04, apport 2.20.10-0ubuntu23

[Brian Murray (brian-murray)]

I was unable to recreate this with apport version 2.20.10-0ubuntu25 from disco on an Ubuntu mate desktop, using the apport-gtk frontend. When I click "Other problem" I receive a dialog indicating that I need to specify a package or PID and apport quits. Subsequently, I think this is specific to the kubuntu frontend.

[Roger Light (roger.light)]

Just to confirm, because Brian had a slightly different version number, this still exists on 2.20.10-0ubuntu26.

[Benjamin Drung (bdrung)]

Brian, you were unable to reproduce this bug due to #1967965 (choices have inversed order in apport-kde).

[Benjamin Drung (bdrung)]

apport-gtk is not affected, but apport-kde is. I updated the description. Ubuntu 22.04 (jammy) is still affected.