I have a horrible sense of direction, so I was trying to make a large map of my world to hang on a wall. However, while making the pieces, I noticed the first map, which contained my house near my initial spawn point, the cursor has stops moving.
What I expected to happen was...:
After creating my second map, the first would continue to show where I am in real time.

What actually happened was...:
The first map's cursor remains as a white dot wherever I had crossed the border, regardless of where I am. I am unsure if the issue is the cursor itself, or if the map as a whole has stopped updating.

Steps to Reproduce:
1.) Make any number of empty maps
2.) Write first map
3.) Cross map's border, so the cursor marking player's location is marked with a white dot.
4.) Write second map
5.) Walk back to first map's area
6.) Observe how the white dot doesn't move.

To correct frozen map, exit to the game menu, then reload world.