Steps to reproduce:
1. Open the attached project (Bug-AnimDisable.zip)
2. Open the Assets/bug-animdisable.unity scene
3. Play the scene
4. Use the right mouse button (In the first state, the object gameobject should be hidden, in the second state it should be set to active when entering the state)
5. Use the left mouse button (to disable the gameobject)
6. Observe, the gameobejct is disabled, but immediately activated again, as verified by log output

Expected result: Gameobject should be disabled
Actual result: Gameobejct is disabled, but immediately activated again

Reproduced with: 5.3.7p3, 5.4.3p4, 5.5.0f3, 5.5.0p3, 5.6.0b2