The editors snap grid will zfight with flat surfaces of static meshes and BSPs.
Found in 4.19 CL# 4033788, 4.20 preview CL# 4121666, 4.21 CL# 4131780
The editor grid will zfight with surface of the mesh
The grid would show up as normal
There's no existing public thread on this issue, so head over toAnswerHub just mention UE-60615 in the post.