When a player Creates a map hangs it on an item frame, if the player retrieves the map, the map no longer continues to fill the map, nor identify the player.

Create Map
Zoom Out to Scale 4/4 1:16
Activate map (show player on map, filling map)
Place map in item frame
Note the lack of player on map in item frame
Take map from frame into inventory
Notice that the map can no longer be filled out.

This also may be based on the zooming-out of maps.

Create map
Activate map (show player filling in map)
zoom out map
Shift click
Notice the consumed paper and no change in map zoom/scale.

Cheers!