[Bug 57839] New: Black rects appear briefly during window drawing

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=57839

Bug ID: 57839
           Summary: Black rects appear briefly during window drawing
           Product: Wine
           Version: 10.1
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

I've noticed Wine 9.x started producing a visual artifact when opening dialogs,
navigating menus, bringing windows to the foreground.

The effect appears like a black area, displayed very briefly just before the
actual content is drawn. I think this has started somewhere with 9.x and I
don't see this black flash effect in Wine 8.0.

It seems every time there is some activity on the window area the affected
region is "blanked" out momentarily before the GUI is drawn.

Using Wine 10.1 on Xorg with amdgpu and Trinity desktop. Xfce 4.12 shows same
problem.
Is there some redraw frequency I can tweak to fix this? The effect sounds minor
but gets really jarring fast.