Steps to reproduce :

- click on a material asset in Project view.
- in Inspector, change some value, like Texture tiling or specular amount etc.
- activate Undo (Edit->Undo…) and the change is reverted.
- now click on an asset containing animations in Project view.
- in Inspector, click on an animation clip.
- untick a box, or change a float value (e.g. Rotation Offset).
- activate Undo (Edit->Undo)