System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce GTX 550 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 376.54
Blender Version
Broken: version: 2.91.0 Alpha, branch: master, commit date: 2020-09-03 15:46, hash: rBd2c52d4de2ca
Worked: (newest version of Blender that worked as expected) commit date: 2020-08-28 16:58, hash: rB8f5b9fb51997
Short description of error
Icons missing T-panel
Exact steps for others to reproduce the error
As you can see in the image below
better pic

