Flying object when I put the Character Controller

When I put the 3D model only and add a box collider, the correct area of box collider is respected.

But int the main prefab I did, I use box collider and character controller, the “same” object stay flying same if I use the correct configuration in colliders (dimensions and center object).

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Suggestions :

Use a capsule collider instead

Make the capsule collider touch to the edge of the foot. EXACTLY TO THE EDGE.

Check the colliders of the road!

Oh wait I just realized you are using Character Controller!

Character Controller has a built in capsule collider!

Check its size AND REMOVE THE BOX COLLIDER.

Character controller itself is a collider

See the 3rd pic the big blue lines are the collider of the character controller!

Fix the height radius to fit exactly!

NEVER USE 2 COLLIDERS (I dont know even if you can)