Level BP does not receive events from Pawn BP

I have two blueprints P and O. Both have EventDispatchers that are called at a certain point.
The blueprint P derives from default pawn, while the blueprint O is a simple mesh inside.
In the level BP I try to get events from both class BPs.
I receive them from the blueprint O but not from P. Printouts tell me that events got sent correctly from both P and O.
What is the reason my Pawn derived class events are not registered in the level?