Maps do not move player from arrow to dot when you leave area

1.6.0.1

Normally when you are inside the map, the player is represented by an arrow. When you leave the map, the arrow transforms to a dot.

However when I do leave the map in MCPE version 1.2.9, the arrow isn't transformed into a dot. The arrow remains there, at the edge of the map.

The map goes up to Z+1536, so the arrow should transform into a dot past Z+1536, I go to Z+1800, and the arrow is still there. It's supposed to be a dot.