See: http://answers.unity3d.com/questions/194441/Why-do-I-get-OnTriggerExit-upon-collision-when-a-rigidbody-is-kinematic-example.html

Just press play. OnTriggerExit will pause the editor when called.

Note that when the editor pauses, the falling Cube hasn't left trigger zone, but just collided with kinematic rigidbody.

The provided example just happens to create the error case. Any of the following changes will not result in the bug:
1. Setting the player's physics material to None
2. Enabling continuous dynamic collision on the cube.
3. Making the player non-kinematic.
4. Changing the starting Y positions of either the cube or the player