Object becomes kinematic after being grabbed and set back down.

The hand has a collider set to trigger for grabbing and also a normal collider so objects can knocked over or punched. However, after picking the object up and setting it down, it can be picked back up again but there is no force effect from the hand.

I suspected that maybe the OVRGrabbable script or rigidbody was being set to kinematic but this isn't the case. There doesn't seem to be any indication of what is being changed. This is from the default rig/scene found in the XR Package.

 

Did you look at the RigidBody element in the inspector to see if it is nonkinematic before you grab it and then check it again after you set it down to see if it did get changed to kinematic? Do you have the "parent to hand" enabled on the OVRGrabbber script?