System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: Quadro K4000/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 442.92
Blender Version
Broken: version: 2.90.0 Alpha, branch: master, commit date: 2020-07-19 21:23, hash: rB78e40ad21f5b
Worked: (last week versions of 2.9)
Short description of error
blender crashes when using and switching to the light theme and modo theme (these 2 for me)
Exact steps for others to reproduce the error
Default scene, change theme