SampleControls.au3 in Dark Mode

[WildByDesign]

There seems to be a bug with the custom tab control drawing in _WinProc. It randomly erases whatever content is in the tab during the custom drawing. For example, in example script without any modifications, the label with the text Sample Tab gets erased on GUI startup approx. 20% of the time. Also, when switching back and forth from either tab Two or Three back to tab One, the label is also getting erased in that scenario as well approx. 20% of the time.

I haven't been able to figure out the root cause but it seems mostly to be a timing issue.

EDIT: I also tried modifying the code slightly by adding a simple checkbox in the tab and the checkbox randomly gets erased as well. At first I was thinking maybe the issue was related to the label coloring. But it definitely has to be the custom tab drawing causing the contents of the tab to be erased.

Edited 1 hour ago by WildByDesign