[Bug 37973] New: mz800 emulator no screen refresh when switching apps

https://bugs.winehq.org/show_bug.cgi?id=37973

Bug ID: 37973
           Summary: mz800 emulator no screen refresh when switching apps
           Product: Wine
           Version: 1.7.34
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: directx-d3d
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 50594
  --> https://bugs.winehq.org/attachment.cgi?id=50594
Blank screen when switching to the mz800 application

When I start the mz800 emulator and switch to a different application and back,
the screen is black.

This is a very old bug (years).

The emulator can be found at http://mz-800.xf.cz/download.htm (download the
emulator and extract the ROMs to the ROM directory). After starting just click
the "Demo" button to start the demo.