Dynamic convex mesh collider not working until moved in the editor

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I'm creating a dynamic mesh collider that updates every frame. The issue is that the collider doesn't seem to enable until I move it in the inspector. Any idea why it's not enabled the frame the dynamic mesh is assigned?

video of problem

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Answer by wyatts · May 29, 2019 at 10:00 PM

Apparently every frame you update the collider you need to set it to null first

 // on new frame clear collider
  GetComponent<MeshCollider>().sharedMesh = null;
 
 // do your stuff to change mesh

 // set new mesh to collider
  GetComponent<MeshCollider>().sharedMesh = newSharedMesh;

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Dynamic convex mesh collider not working until moved in the editor

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