[Bug 42988] New: Pocket Mirror causes heavy flickering in fullscreen mode on wine-staging

https://bugs.winehq.org/show_bug.cgi?id=42988

Bug ID: 42988
           Summary: Pocket Mirror causes heavy flickering in fullscreen
                    mode on wine-staging
           Product: Wine-staging
           Version: 2.7
          Hardware: x86
               URL: http://astralshiftpro.tumblr.com/pocket-mirror
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
                CC: [e-mail], [e-mail],
                    [e-mail]
      Distribution: ArchLinux

Created attachment 58125
  --> https://bugs.winehq.org/attachment.cgi?id=58125
short video of the issue

Running the game Pocket Mirror in fullscreen leads on wine-staging to heavy
flickering. About once or twice each second the desktop or some other image
from the game is partially visible through the game. However, the issue does
not appear in vanilla wine 2.7

I tried to make an apitrace, but it only shows a single frame, so there's
something wrong there, too.
If you need more info please tell me, I'd make a bisect but I don't know how to
apply the staging patches partially since a lot of them depend on each other.

Using Arch Linux with KDE 5.9.5-1, running 32bit wine program on 64bit OS.

Game URL: http://astralshiftpro.tumblr.com/pocket-mirror
Direct download:
http://t.umblr.com/redirect?z=https%3A%2F%2Fmega.nz%2F%23%214YBSWIKb%21nbjSi...