https://bugs.winehq.org/show_bug.cgi?id=38633
--- Comment #2 from Béla Gyebrószki gyebro69@gmail.com --- (In reply to Sebastian Lackner from comment #1)
Not sure if you tested it already, but does something like https://raw.githubusercontent.com/wine-compholio/wine-staging/master/patches... user32-Painting/0001-user32-Enforce-that-surfaces-are-flushed-after-Relea. patch also help?
The problem is present in wine-1.7.43-123-g90ed96a (Staging) as well.