When I was making my game, I gave a Coin a Physics behavior so it would behave in a cool way. But The Problem is that It keeps falling through the ground. The Ground is A Tile Map so it can make it easier for me to make Levels. (Obviously, the TileMap is solid because if it wasn't, the Player would just fall through like the Coin). The only difference between the Coin and Player is that The Player uses The Platformer Behavior and the Coin uses Physics.
(If you need more Info, just ask. I REALLY, REALLY, REALLY Need as much help as I can get to solve this.