In Hierarchy create new object (2D Object > Sprites > Square)
Select created object and in top menu open Window > Animation > Animation
In Animation window click Create (and save animation)
Drag and Drop three sliced sprites into Animation window
Try moving added keys left or right
Check console for errors
Expected results: No error in console. It should be possible to move key frame left/right.
Actual results: Unable to move key frames in Animation window and multiple errors are thrown in the Console window if trying to do so.