Issue with maps and Frames

We created a fully scaled map. Everyone was visible on this map. When someone places the map into a frame he gets invisible on the map for the others as well as for himself after he takes the map back. This is pretty annoying because it makes the map useless. Can you fix this please? Thank you!

Info: In the picture I am looking North and the map I am holding in my hands is a copy of the map in the Frame. Still me and the others cant see me.