[Bug 51198] New: regression: black screen in main menu of warcraft 3 reforged with wine-staging-6.9

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=51198

Bug ID: 51198
           Summary: regression: black screen in main menu of warcraft 3
                    reforged with wine-staging-6.9
           Product: Wine-staging
           Version: 6.9
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
                CC: [e-mail], [e-mail]
      Distribution: ---

Created attachment 70072
  --> https://bugs.winehq.org/attachment.cgi?id=70072
wc3.log.bz2

When running Warcraft 3 Reforged in wine-staging 6.9, main menu is a completely
black screen, and instead of cursor there are some visual artefacts.

With wine-staging 6.8 it works acceptably: it's really slow, but at least
there's properly rendered main menu.

No DXVK is used.

OS: Gentoo Linux, kernel 5.10.27

Proprietary Nvidia driver 460.67:
OpenGL vendor string: NVIDIA Corporation
OpenGL renderer string: GeForce GTX 750/PCIe/SSE2
OpenGL core profile version string: 4.6.0 NVIDIA 460.67
OpenGL core profile shading language version string: 4.60 NVIDIA

Wine output contains a lot of lines similar to:

03bc:err:d3d:state_undefined Undefined state UNKNOWN_STATE(0) (0).

Log is attached.