Having the same issue. Looking around it seems to be a feature that isn't implemented with DXVK yet.
fixme:vulkan:X11DRV_vkCreateWin32SurfaceKHR Application requires child window rendering, which is not implemented yet!
Related issues:
https://bugs.winehq.org/show_bug.cgi?id=45277
https://github.com/doitsujin/dxvk/issues/815
Compatibility Report
System Information
I confirm:
Symptoms
Neither 2D or 3D viewports in any tool show anything. They instead show a background gradient or other parts of the editor glitched.
steam-469960.log
Reproduction