Steps to reproduce (or watch attached video):
1. Create a new Unity project
2. Create a new GameObject in the Hierarchy
3. Open timeline window and begin a new timeline with GameObject
4. Start recording
5. Insert a new key by changing GameObjects any transform value
6. Remove GameObjects 'Playable Director' and 'Animator' components
7. Look at GameObjects 'Transform' component in the Inspector

Actual result: Transform values are highlighted as if they were in Preview/Record mode even though GameObject doesn't have Playable Director and Animator components
Expected result: Transform values are not highlighted

Reproducible with: 2017.1.0b1, 2017.1.0f1, 2017.2.0b1