Colour issue with aui wxPython 4.1.1

#1

I observed an issue with the background colours of frames managed by AUI. The aui demo looks like this:

Screen Shot 2020-11-28 at 10.31.50
Screen Shot 2020-11-28 at 10.31.50862×702 72.1 KB

Titelbars and apparently the overall background (the narrow lines between the aui windows) are black.
This happens on OSX with wxPython 4.1.1. It looks fine with wxPython 4.1.0.

#2

I don’t know whether it’s related, but with 4.1.1 some of my toolbar icons have a black background instead of transparent:
grafik
instead of this:
grafik

I did not yet have a close look.

#3

I am also struggling with colours. Maybe related this post.

Other elements that don’t have colour management are windows frames (title bar, system menu) and menus.