The Empty Locator Map cannot be moved from the player inventory.
How To Reproduce:-
Step 1:- Get A Stack Of Empty Locator Map.
Step 2:- Place it in the First Slot of the player inventory.
Step 3:- Now move the Empty Locator Map to another Slot.
The Empty Locator Map does not move from the spot where it is first placed.
It should move to the other slot.
Hoping this information is helpful to fix the bug.