Hi
I might reach a bug or something, here is what I did.
Create a gameobject from prefab and send multiple events to it with event target set to Game Object FSM (need input the name of the FSM), the target FSM will only receive the one event, and the event is not received at the same time as it sends.
If I change the event target to Game Object, then the problem is gone.
I have attached a test scene as well, need PlayMaker pre-installed.
Cheers