https://bugs.winehq.org/show_bug.cgi?id=48618
--- Comment #7 from Chris Watts chris@cjwatts.com --- The latest Wargaming Game Center still works for me.
As a general update, I had a fresh install of Ubuntu 20.04 recently which has Wine 5.0 in the official repositories. This too has the aforementioned issue with blacked-out graphics, but once again, installing DXVK for a Vulkan-based D3D implementation works a treat.