Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 442.19
Broken: version: 2.91.0 Alpha, branch: master, commit date: 2020-08-03 22:28, hash: rB6791b88d2805
Worked: (newest version of Blender that worked as expected)
Short description of error
[Please fill out a short description of the error here]
i added a simple plane for a floor and you can see contact shadow between plane and cube is strange.
this bug appears from 2.83 to 2.91
Exact steps for others to reproduce the error
[Please describe the exact steps needed to reproduce the issue]
from default startup file, i added a plane and rendered in evee.
[Based on the default startup or an attached .blend file (as simple as possible)]evee cycle