[Bug 57582] Eschalon Book I: launcher menu flickering

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=57582

--- Comment #2 from Rémi Bernon  ---
Fwiw the launcher uses ddraw, and somehow sets the window pixel format
repeatedly. This causes the GL drawable to be quickly recreated, and it is
causing the window to flicker.

Somehow, as the underlying window previously didn't have any background pixel
color, I think the last pixel color was used which happened to be the last GL
frame and the flickering wasn't visible.