[Bug 38001] Vulcan Software Valhalla Classics episodes have partially drawn windows when ddr=opengl

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=38001

--- Comment #7 from [e-mail] ---
Wine 7.14 update:
- still works correctly only on gdi renderer;
- gl renderer displays game area correctly, but UI sometimes is just black
rectangle, hovers on controls and UI overlays (e.g. exit game confirmation)
doesn't render at all;
- vulkan renderer works opposite to gl: UI elements are working correctly, but
game area is black.