System Information
Operating system: Windows-10-10.0.18362 64 Bits
Graphics card: Quadro P2000/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 431.02
Blender Version
Broken: version: 2.80 (sub 74), branch: master, commit date: 2019-07-14 21:02, hash: rB65168825e0b0
Worked: (optional)
Short description of error
can't add more then 4 custom keymap
Exact steps for others to reproduce the error
After adding 4 keymap under "3D View/Mesh", I can't add more; when try to add one more, it close (see image)
