Tagged collider objects returns untagged

Unity Engine
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1

Hi, I want to create a collider as a checkpoint for my car. Unfortunately the OP tag is for some reason not detected correctly and I am not sure why.

This is the car object that I want to reach the checkpoint.
I tried adding the OP tag to the object, the prefab and the parent as well.

image
image761×895 113 KB

Here is the Checkpoint object with the Checkpoint script.

image
image760×647 80.9 KB

The checkpoint script

void OnTriggerEnter(Collider other)
    {
        print("Trigger " + other.gameObject.tag);
    }

The output
image

Any help would be apreciated!

2

Okay, I solved it by just replacing the Mesh Collider with a Box Collider.
Why is that the case?

3

Collision between a non-convex mesh collider and other mesh colliders is not supported by the physics engine.

BTW mesh colliders are inefficient. Always avoid using them whenever a primitive collider will work.