How to reproduce:
1. Open the attached project
2. Open and play Main scene
3. Click button on the left (it doesn't stretch- doesn't animate)
4. Click button on the right (it will stretch)
5. Open TestMoveSBOverriden.cs script and notice that is has overriden OnStateMove message. It is attached to button's on the left Pressed state of the Button controller.

By Design: This is the expected behaviour, if you override either OnAnimatorMove or OnStateMove then you are managing the root motion animation, the animator won't write anymore into the root transform