As it seems, added a instance static mesh to a actor blueprint, collision is not working. I cant see any player collision or get any collision at all.
Reproduced it in 4.21 in a blank project, and as it seems the issue is related to 4.21, if im not mistaken.
The static mesh has collision
Collision settings are correct in the instance static mesh component.
Tried several meshes.
Tried adding the meshes under instances manually as well.
it looks like it’s project related, I will update this thread as we find out more with epic.
the collision is working when packaging to the phone but not in editor!