Hi,
Basically you can expect objects marked static to be moving, they should not,but you mark them static because then the lighting system ( and other system) can rely on the fact it's not going to be moved).
now, I would try to not have this static object as a child and simply connect them using playmaker with a get position of the parent and then a setposition of this static, maybe it could work ( same with rotation).
Have you tried that?
Bye,
Jean