Tilemap does not update on entering a zone

[yeslayla]

Issue description:

The grass auto-tile will not update when entering a new room.

Steps to reproduce:

Player 1 enters room and cuts grass
Player 2 enters room after grass has been cut
Player 2 will have messed up tilemap

[Nodding]

To be fixed, then reworked (collectibles)

[Elginive]

This has been fixed during my networking adventures.