TrueSync 3D objects Collision with CollisionSystemPersistentSAP Not Working

Hi all!

Been playing around with TrueSync a good while now, and was trying to create a ground to which some cubes can fall onto.

After setting up the ground (w/ TSBoxCollider) and some cubes (again w/ TSBoxCollider), I froze the ground's position and rotation, disabled gravity for it and let the simulation begins! To my horror, the cubes are falling right through the ground.

I tried enabling the collision from the layer matrix settings inside TrueSyncGlobalConfig, and still the cubes are falling right through.

After a few breakpoints here and there, I tried to change the default collision system from PersistentSAP to just the regular SAP. And then the collision callback is finally called, though the cubes are still falling through.

Lastly I tried removing TSRigidBody from the ground component, and finally, the cubes fall like they should.

However, I'm unsure that this is the correct way to set up environment colliders in TrueSync. Could someone chime in as how they did it?

I'm using Unity 5.6.0.f3 and TrueSync version 1.1.0

Thanks!