I noticed this in SW 2015 SP5.0 and 2016 SP2.0. I tested both today.
I heard it has been an issue for a while, but I didn't see it until yesterday.
If you show Center of Mass on a drawing view, and add a "Break" to the view, the CG will move with the break. If you have a dimension on the CG, the symbol with still move, but not the dimension.
In 2016 there is a new command to Break the model, but the CG will disappear after the Break is added.
I will turn this in tomorrow to SW, I think it's a bug.
Has anyone here experience this?