System Information
Operating system: Windows-10-10.0.17763-SP0 64 Bits
Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 442.92
Blender Version
Broken: version: 2.90.0 Alpha, branch: master, commit date: 2020-07-04 15:31, hash: rB464aaf27016f
Worked: (newest version of Blender that worked as expected)
Short description of error
deselecting a keyframe in the graph editor doesnt deselect its handles.
Exact steps for others to reproduce the error
see video