To Reproduce:
1. Play 'scene' in the attached project.
2. Notice the error message. 'Inertia tensor must be larger then zero in all coordinates' is thrown when disabling the 'Capsule' gameObject if it's rigidbody's rotation is constrained on any axis.
3. Only happens after the first frame, i.e. disabling the object in 'Start()' throws no error, disabling it in a Coroutine after a 1 frame yield results in an error.