Steps to repro:
1. open project with animations
2. open window > general > animation
3. in hierarchy, select an animated game object
4. in animation window, select an animation from the dropdown
5. select an animation event (or add a new one)
6. check inspector, observe the UI shows a dropdown "Function: (No function selected)"
7. in project view, select animation asset
8. in animation window, select the same event
9. observe UI in inspector is different (as pictured in docs: https://docs.unity3d.com/2020.2/Documentation/Manual/script-AnimationWindowEvent.html )

Expected: Animation event can only be accessed with correct UI, when accessed via game-object
Actual: animation event can be accessed via asset resulting in confusing UI, and docs shows this broken UI

repro: 2019.3.15f1