[Bug 40275] New: Annoying flickering in Portal with CSMT enabled

https://bugs.winehq.org/show_bug.cgi?id=40275

Bug ID: 40275
           Summary: Annoying flickering in Portal with CSMT enabled
           Product: Wine-staging
           Version: 1.9.5
          Hardware: x86-64
                OS: Mac OS X
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
                CC: [e-mail], [e-mail],
                    [e-mail]

When CSMT is enabled, the screen in Portal flickers. This probably also applies
to all other Source engine games, and I think I've seen it in a few non-Source
games.