Mesh collider acting wierd in WebGL

I posted this first in WebGL forum, but may be more appropriate here.

This is the WebGL post
https://forum.unity3d.com/threads/first-time-webgl-game-input-collider-dont-work.454356/

I have a couple objects, made in blender, and collisions are not working right in WebGL. At a loss to figure out what is going on. Details are in the linked post. I will update here if I find out anything.

 

I'm having similar issues. Oddly, the rotation of the mesh (made in blender) seems to be relevant to the issue happening for me.

Details here: http://answers.unity3d.com/questions/1406530/in-webgl-build-rigidbody-only-collides-with-mesh-c.html

 

I have the same problem.
Details here: https://forum.unity.com/threads/problem-with-mesh-collider-in-webgl-build.513533/

 

bump mesh colliders is not stabil on webgl builds!