[Bug 58914] Basic Windows Combobox are randomly missing entries

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=58914

Dmitry Timoshkov  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |regression
    Regression SHA1|                            |05d727a935b9009f188cc74ca77
                   |                            |e14afc44aef30
                 CC|                            |[e-mail]

--- Comment #18 from Dmitry Timoshkov  ---
The regression is cased by

05d727a935b9009f188cc74ca77e14afc44aef30 is the first bad commit
commit 05d727a935b9009f188cc74ca77e14afc44aef30
Author: Rémi Bernon 
Date:   Sat Jun 15 21:09:37 2024 +0200

win32u: Update the layered surface attributes in apply_window_pos.

And after layered window creation in NtUserUpdateLayeredWindow.

This commit is part of wine-9.13, wine-9.12 is the last version without the
bug.

So, it looks like the problem is with painting. After building at this commit
git reset --hard 05d727a935b9009f188cc74ca77e14afc44aef30
the problem is reprodicable, after
git show 05d727a935b9009f188cc74ca77e14afc44aef30 | patch -p1 -R
and rebuilding the EOC entry is the combobox is visible.