https://bugs.winehq.org/show_bug.cgi?id=42611
--- Comment #7 from PJBrs pjbeers@xs4all.nl --- One further comment - I changed a bit of the Xorg config of the intel driver (I disabled the TearFree option of the intel driver) and I've noticed the issue much much less. All menus now look normal, and I see only one or two black squares where, in powerpoint, the slide thumbnails should be. This suggests that the issue might be purely within Xorg, or in the relation between wine and Xorg right? (I'm not much hindered by real knowledge about all this, by the way.)