Steps to reproduce:
Rename a map in the cartography table;
Place the map there again and erase what you just typed.
Expected results:
The map should have its name removed and go back to "Map 0" or something like that.
Observed results:
The map name remains, even though it can be removed by doing the exact same thing with an anvil instead.
Linked issues
Comments 2
Will merge into MCPE-47254 since this was fixed at the same time and was presumably the same issue
I think the real issue here is at MCPE-47254, which is misleading as it makes it appear that the map is going to be renamed. Trying to remove the name entirely does not appear to be an option to the player.