What causes compound collider setup problems?

Multiple colliders on one body are set up without a single rigidbody, with overlapping or wrongly-placed shapes, or with inconsistent settings, so collision and physics behave oddly.

How do I catch this when it only happens for some players?

Capture it automatically from the player's device with the full stack trace, the device and OS, the build, and a breadcrumb trail of what they did. That turns a vague complaint into a specific, reproducible issue you can fix without owning the hardware it happens on.

How to Fix Compound Collider Setup Problems

Quick answer: Use one rigidbody on the root with child colliders, place and size the shapes to approximate the object, and keep their physics settings consistent.

Compound collider problems are incorrect multi-collider setup. Here is how to fix them.

How to fix it

1. Use one rigidbody on the root

A compound collider is one rigidbody on the root with multiple colliders (on it or children). Extra rigidbodies on the children break it into separate bodies. Keep a single rigidbody for the whole object.

2. Place and size shapes well

Arrange the child colliders to approximate the object's shape without unnecessary overlap. Poorly placed or overlapping shapes cause odd collision response and wasted contacts.

3. Keep settings consistent

Use consistent physics material and layer settings across the compound's colliders so the object behaves uniformly. Mismatched friction or layers between parts make different sides of the object collide differently.

Catching the ones you can't reproduce

The hardest version of this to fix is the one you can't reproduce — it only happens on a player's hardware, OS, driver, or save state, under conditions that simply aren't present on your machine. A report that says “it crashed” or “it froze” gives you nothing to act on, so the bug survives release after release while quietly costing you players.

Automatic error capture closes that gap. Each failure arrives with its full stack trace, the device and OS, the build number, and a breadcrumb trail of what the player did right before it broke, so even a failure you have never seen becomes a specific, reproducible issue. Fold identical failures into one signature ranked by how many players each hits, and your worklist sorts itself worst-first instead of arriving as a stream of vague complaints.

This is where a tool like Bugnet earns its place. Its SDK captures every error automatically with the full stack trace plus device, OS, memory, build, and game-state context, folds duplicates into one grouped issue with an occurrence count, and ties each to the build it first appeared on — so you fix the problem that hurts the most players first and confirm it is gone when its signature disappears from the next release.

Ship the fix, watch the signature disappear from the next build. That's how you know it's really gone.