animation wont update/move after adding StateMachineBehaviour script onto the state

hi
i just keyed some simple ptA to ptB animation on a sphere with the buildin animation window in unity, and map out some input control to drive it, just to test out the new StateMachineBehaviour script that can be added onto the state now.

before adding the script, animation can run and update like it should be, i mean it really move.

then after i added the script and enable all those override methods that comes with the template, just to make them debug.log something for pure testing purpose. wel they all readout loud and ok in the console. then when i look at the game play window, i see the sphere is no long moving when i make the animation happen (all the debug log are still going fine), but the sphere now just pop to the end point when the animation is completed. instead of moving toward the end point while the state is updating

i can confirm that when i disable (the tick mark in front) the StateMachineBehaviour script, the animation will move again, when enable back on, the sphere will pop to the end point after the animation is finished

can someone do a simple test like this in yours and see if its a bug or something? i wonder if that would happen when i use actual skeleton animation coming from outside

 

so thats why, thank you for clarify