[Bug 41711] World of Warcraft - Legion renders into "sub-windows" incorrectly with DirectX/Mesa

https://bugs.winehq.org/show_bug.cgi?id=41711

--- Comment #23 from Chris Rankin  ---
(In reply to Matteo Bruni from comment #22)
> You normally run the game without Mesa version overrides and that fails as
> in the bug description, right?

No, I've been running WoW with MESA_GL_VERSION_OVERRIDE for a while now so that
OpenGL mode wouldn't crash:

https://bugs.freedesktop.org/show_bug.cgi?id=91600#c5

However, then Blizzard made a half-donkeyed effort to update OpenGL mode that
left it unplayable. And D3D11 mode doesn't work yet either, so D3D9 mode it had
to be.