Found while investigating case 1153121.

Reproduce :

• Create a Timeline
• Add an Animation Track
• Create a cube in the scene
• Record an animation on the cube and add to the animation track (can be recorded in timeline window)
• Preview the animation in the timeline window
• Select the cube in the scene view and disable the Playable Director in the inspector window
• Observe that the cube does not revert to its original position (the timeline evaluation is still applied)
• Move the playhead in the Timeline window, observe that the cube does not update in the scene view
• Toggle preview Off
• Observe the cube returns to its original position
• Toggle preview On

Expected : Cube does not move
Actual : Cube will preview the animation at the time in the Timeline Window