Collider Missing Randomly ? Here is why.

Ever wondered why your collider isn’t triggering in Unity? You’ve checked all the Rigidbody and the BoxCollider, you’ve set “Is Trigger,” you’ve tried every possible layer mask… yet nothing happens. No OnTriggerEnter, no OnCollisionEnter, no hit detection at all.

And then, sometimes… it does work. Once. Maybe twice. Then it mysteriously stops again — the classic collider not triggering issue, the collision not detected bug, the Unity physics glitch that every game dev meets at least once.

If you’ve been fighting with colliders not firing, fast-moving objects missing collisions, or triggers working inconsistently, this short will finally make it click.

In just a few seconds, you’ll understand why your collider doesn’t trigger — and how to fix it using a simple raycast technique that makes your collisions 100% reliable, even at high speed.

Watch until the end — this fix will save you hours of debugging on your next Unity project.

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