Moves correctly, refresh player and does not

Natespace

I have an actor that is spawned then it moves itself to a position. It works - most of the time... Sometimes it just keeps on moving on out of the screen. It will work right and then without changing any code, I've just refreshed my player to watch it happen again and it goes off.
Very random. I've removed all but the 'move to' and it still happens sometimes.