Bug#988632: audacity: The main drawing area (sound wave) do not refresh

[Dennis Filder <d.filder@web.de>]

X-Debbugs-CC: pominglee@gmail.com

This appears to be known problem:
https://forum.audacityteam.org/viewtopic.php?f=48&t=110214

You could still investigate further by testing if similar behaviour
manifests in other wxwidgets applications.  Running

    aptitude search '~Guitoolkit::wxwidgets'

will give you a list.

I suspect that the issue is due to GL rendering problems.  You could
try changing some environment variables.  A list of available ones is
here: https://docs.mesa3d.org/envvars.html
LIBGL_ALWAYS_SOFTWARE=true would be the first thing I'd try.

Beyond that I doubt there is much anyone could do.  Since you report
that it works with the newest release compiled from source, I would
recommend to just hope and wait for a backport/proposed update.

Regards,
Dennis.