Reproduction steps:
1. Open "1198771" project
2. Select "Share" GameObject
3. In the Animation window click on the Animation Clip dropdown in the left side and see what values are populated (Clip D, Clip E)
4. Select "Root (Animation)" GameObject
5. In the Animation window click on the Animation Clip dropdown in the left side and see what values are populated (Clip D, Clip E)
6. Select "Root (Animator and Animation)" GameObject
7. In the Animation window click on the Animation Clip dropdown in the left side and see what values are populated (Clip A, Clip B, Clip C)

Expected Result: Animation Clip dropdown is populated with these values: Clip A, Clip B, Clip C, Clip D, Clip E
Actual Result: Animation Clip dropdown populates with a list of animation clips from the Animator, but not the ones from the Animation component

Reproduced with: 2020.1.0a13, 2019.3.0b11, 2019.2.13f1, 2018.4.13f1, 2017.4.35f1