Operating system: Windows-10-10.0.18362 64 Bits
Graphics card: GeForce GTX 750/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 436.15
Broken: version: 2.80 (sub 75), branch: master, commit date: 2019-07-29 14:47, hash: rBf6cb5f54494e
Short description of error
In eeve rendering mode, in a brand new blend file in brand new blender install, when any sized plane is put into the 3D viewport, with the base cube, light source and camera, there by default in a new blend file, when put into eeve rendering, there is an unexplainable shadow strecthing across the plane from the only light source in scene.( the plane is in X and Y axis ),
The unexplainable shadow moves as the light source moves, more exact shadows are created with more light sources.
Exact steps for others to reproduce the error
Start up new blend file, and turn eeve mode, add a plane and strech it across X and Y axis exacly, then moving cube right above it to ''setlle '' the cube on the plane.