Collision/triggerleave sensitivity

[LeXXik]

You may find this answer useful:

Collision trigger events are sometimes delayed

I’ve looked into it a bit. So, its one of those unfortunate downsides of using a rigidbody as a trigger. Basically, Ammo is calculating the contact data in the dynamics world and depenetrate objects by pushing them outwards. For efficiency, it caches the contact points in a persistent manifold cache. Since PlayCanvas is using a rigidbody instead of ghost objects, Ammo calculates all the contact info for triggers as it would for normal bodies, caching the contacts. That cache can live pretty long…