BP Pawn is gone in playmode


I have a strange problem with a blueprint test pawn that is removed in game mode.

I have setup a BP Class based on Pawn that has a static mesh as root component, 4 wheels and 4 constraints as child components.
When I place it in the editor I can see the instance of that BP Pawn class, however when I hit “play” the Pawn is removed from the level. You can’t see it anymore and it is not listed in the box on the right (world outliner).

I (the player) spawn with as Pawn class.

Do you have any idea what could be wrong? I can place c++ Pawn classes in the scene and they aren’t removed.

Thank you for your help