[Octave-bug-tracker] [bug #48519] Segfault with Qt plotting when running demos

[Hartmut]

Follow-up Comment #28, bug #48519 (project octave):

(as a reply to comment #22 and comment #23:)
I have tried some more times to reproduce this crahs of Octave. Here are my
observations:
* When I don't touch my PC during the running compare_plot_demos.m script,
then I do NOT get any crash. (This fits to the observation of Pantxo in
comment #22.)
* When I move the popping up figure windows around with my mouse once in a
while (because I try to read some news page in my browser meanwhile), then I
still DO get this crash. (This fits to the observations of Andreas in comment
#25.)
* When I set LIBGL_ALWAYS_SOFTWARE (as suggested by Dmitri in comment #23),
and move some figure windows around, then I still DO get those crashes. So
this LIBGL_ALWAYS_SOFTWARE does NOT change the behavior for me.

Note: I am using Qt version 5.9.5 for this (in Octave 5.0.xxx). So my Qt
version is new enough and it should not still have the Qt bug mentioned in
comment #26. (The Qt webpage claims to have fixed this in 5.9.4)

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