When I place the player start on the ground I spawn way under the ground. When I put the playerstart slightly above the ground I spawn way above the ground.
I have a similar problem.
I had been placing the player start so that the half height is directly on the ground, meaning half the player start capsule is underground. That was working fine for a while, but then I had a UE4 crash. Now, using that same configuration, I always spawn slightly above ground, as if the player start is adjusting for collisions, even though I tell it to ignore collisions.
This is in addition to the player start rotation problems that have been present with UE4 VR since the beginning. It’s such a headache.