I don’t have control. I am set on “Always Spawn, Ignore collisions”.
I checked the gamemode one more time and it is properly setup (I encounter this problem only on built dedicated server anyway).
Also I did some tests. Choose Player Spawn triggers properly and On post login event works too: http://imgur.com/a/vX7f6
Edit: I was able to replicate this in the editor. And you are right, there is no pawn spawned. http://imgur.com/a/HiqFp