The bug

The tag map_tracking_position only works if the value is true / 1b, this means you cannot disable position tracking of a map.

How to reproduce

To make sure the tag can activate position tracking:

1. Use the following command

   /give @p filled_map 1 32767
   

2. Look at the map, its scale should be 3/4 and it should not show your position
3. Replace "###" with the data value of the map you just gave you

   /setblock ~ ~ ~ furnace default replace {Items:[{Slot:2b,id:"filled_map",Count:1b,Damage:###s,tag:{map_tracking_position:1b}}]}
   

4. Look at the map, it should now track your position

To reproduce this bug:

1. Create a new map by right clicking an empty map (map)
2. Replace "###" with the data value of the filled map

   /setblock ~ ~ ~ furnace default replace {Items:[{Slot:2b,id:"filled_map",Count:1b,Damage:###s,tag:{map_tracking_position:0b}}]}
   

   → It is still tracking your position