Bug#897219: openshot-qt: [Ctrl+Q] makes the program hang

[Francesco Poli (wintermute)]

Package: openshot-qt
Version: 2.4.1+dfsg1-1
Severity: important

Hello and thanks for maintaining OpenShot in Debian!

I am trying to learn using it, but I am experiencing a big issue:
whenever I want to exit from the program (by choosing Quit from the
File menu, by hitting [Ctrl+Q], by clicking on the X button on the
window-manager-provided window decoration, or ...), OpenShot hangs
indefinitely and I have to manually kill it with

  $ killall -TERM openshot-qt

Next time I start the program, it recovers my last unsaved project.
But, when I attempt to quit, I again see the program hang forever
(its window fails to be repainted, but it never disappears and
the openshot process never exits).

This even happens after

  $ rm -R ~/.openshot_qt/
  $ openshot-qt

and after just clicking on the Hide Tutorial button and on [Ctrl+Q].
The program hangs (even with no open project!) and I again have
to kill it...


Can you reproduce the bug?
Could you please investigate and/or forward my bug report upstream?

Thanks for your time and for any help you may provide.



-- System Information:
Debian Release: buster/sid
  APT prefers testing
  APT policy: (800, 'testing'), (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.15.0-3-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages openshot-qt depends on:
ii  fonts-cantarell         0.0.25-4
ii  libjs-jquery            3.2.1-1
ii  python3                 3.6.4-1
ii  python3-openshot        0.1.9+dfsg1-3+b2
ii  python3-pyqt5           5.10.1+dfsg-1
ii  python3-pyqt5.qtsvg     5.10.1+dfsg-1
ii  python3-pyqt5.qtwebkit  5.10.1+dfsg-1
ii  python3-zmq             17.0.0-1

Versions of packages openshot-qt recommends:
ii  blender   2.79.b+dfsg0-1
ii  inkscape  0.92.3-1+b1

Versions of packages openshot-qt suggests:
pn  openshot-qt-doc  <none>

-- no debconf information