[Bug 6682] IrfanView's 4.44 Help -> About window is missing a picture on the left

https://bugs.winehq.org/show_bug.cgi?id=6682

--- Comment #55 from Fabian Maurer  ---
If it's of use, the commit that fixed the issue (for me, at least) was

commit 997d4ef44f0f9e2284f99d7ce9ec135d68b30c7b
Author: Fabian Maurer 
Date:   Mon Feb 13 16:58:29 2017 +0100

user32: Send WM_NCPAINT and WM_ERASEBKGND when window is shown.
> Have you moved the about window or overlaid it with something? It works that
> way. It won't work once you invoke it without doing anything else. Also your
> composite window manager might have interfered - I don't use one.

The issue at hand was that a newly shown windows didn't get a redraw message,
this the image was missing. That also explains why it works when you move the
window or overlay something. I don't really know why it doesn't work on your
system. Maybe the tests I added in this commit can help gather insights?