Default Mannequin Collision Inaccurate

Hello. I’m trying to make a platformer game with the default mannequin. But the collision looks troublesome. Even if the character is out of the box, it stays in the air. I want the character to fall to the ground as soon as his feet don’t touch the box. I messed around with the Collision and physics part, but I couldn’t solve the problem. How can i solve this