[Bug 48068] New: Mostly black window in Epic Games Launcher

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=48068

Bug ID: 48068
           Summary: Mostly black window in Epic Games Launcher
           Product: Wine
           Version: 4.19
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 65617
  --> https://bugs.winehq.org/attachment.cgi?id=65617
Output of % wine {Prefix}/drive_c/Program Files (x86)/Epic
Games/Launcher/Portal/Binaries/Win64/EpicGamesLauncher.exe
-SkipBuildPatchPrereq

I have installed the Epic Games Launcher.  It opens up with a mostly black
window.  However, the app draws its own window controls, such as minimize and
close, and those work.  Also, there's a "Settings" icon in the corner.  When I
click that, it takes me to a settings screen which appears to work.  However,
the rest of the window is black and I cannot install the untitled goose game,
as I so desperately want to do.

I'm using wine 4.19-staging.  The Epic Games Launcher version ... well, I have
a story about that:  While I was gathering info for this bug report, I started
the launcher and this time, the "Settings" icon had a dot on it.  So I clicked
the Settings icon, and it said there was a new version of the launcher and I
should click here to install the new version and restart the launcher, and I
did and it worked.  So at least that much of the app is working.

Anyway, the version (which is visible from the Settings screen) is now
10.9.1-10088168+++Portal+Release-Live

I don't think this is related to the ancient #40376 since that was last updated
2 years ago and seems to be caused by a bug which was fixed in a prior version
of wine.