Cursor on the maps isn't there, there is not cursor ! (I have just created the map)
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To add the cursor, you need to:
1) open an anvil
2) Put the map into one slot
3) Put a compass into the other slot
4) Take the upgraded map
5) Your map now has a cursor!
This video shows all of the features of maps in MCPE:
https://www.youtube.com/watch?v=JYfUVqU35v8
Hope this helps!
To add the cursor, you need to:
1) open an anvil
2) Put the map into one slot
3) Put a compass into the other slot
4) Take the upgraded map
5) Your map now has a cursor!
This video shows all of the features of maps in MCPE:
https://www.youtube.com/watch?v=JYfUVqU35v8
Hope this helps!
This works by design. If you want the cursor to show on the map you need to upgrade it using an anvil. You just craft the map with a compass.