[Bug 59011] New: Wargaming Game Center Window not appearing / invisible

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59011

Bug ID: 59011
           Summary: Wargaming Game Center Window not appearing / invisible
           Product: Wine
           Version: 10.16
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 79750
  --> http://bugs.winehq.org/attachment.cgi?id=79750
console output

When starting WGC, only the tray icon appears, but no window. Even after
clicking 'Open Game Center' in the context menu. Rendering the launcher
unusable.
Everything works fine again after downgrading wine to 10.15.