Operating system: Windows-10-10.0.18362 64 Bits
Graphics card: GeForce 920M/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 419.17
Broken: version: 2.82 (sub 0), branch: master, commit date: 2019-10-15 09:30, hash: rB3db7f145df21
Short description of error
In perspective view knife tool not working and not showing preview pixel/line.
In side view everything works fine.
Exact steps for others to reproduce the error
Make sure you are in perspective view mode.
Press K or select Knife Tool.
By the way I've deleted everything from project. One object with 10 verts is left. I don't know why blend file is 35 mb.