Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce GTX 1060 6GB/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 446.14
Broken: version: 2.90.0 Alpha, branch: master, commit date: 2020-06-21 01:51, hash: rBb4ba27f02621
Worked: (newest version of Blender that worked as expected)
Short description of error
Blender crashes to desktop when changing the threshold value for extract palette in its adjust last operator panel.
Exact steps for others to reproduce the error
In the Image menu choose extract palette
In the adjust last operation panel try to change the threshold
Blender will crash to desktop.