Bug#935173: audacity graphical windows fail to update properly

[Yuri D'Elia <wavexx@thregr.org>]

On Sun, Sep 22 2019, Klaumi Klingsporn wrote:
> But I remember that I had similar problems with a
> self-compiled earlier 2.3-version of audacity. I had to
> move the configuration-directory (~/.audacity-data) out of
> the way and to choose the classic-theme to make it work.
>
> Maybe this helps?

I tried zapping ~/.audacity-data, but I have the same issue.

Some widgets do not repaint properly, but the main issue is that audio
tracks only seem to redraw when resizing the main window. I rebuilt
audacity from git earlier today, but it still doesn't repaint the tracks
(for instance, while playing, zooming, etc).

The only thing I see is errors on the console:

*** BUG ***
In pixman_region32_init_rect: Invalid rectangle passed
Set a breakpoint on '_pixman_log_error' to debug

but I'm not sure if they're related or not.