When changing values in the Interaction Transform, it sometimes changes different values than you intend.
For example, check out the attached video – and watch how the image gets skewed after I make changes to the move values.
You can see that the scale value changes from scale(1.1) to scale(1.1, 1) when I made changes to the move value.
It repros every time you close the transform pop-up. Meaning, once you “fix” the scale value like I did in the video, then close the pop-up to work on something else - the next time you come back to make a change to one of the move values, it will “break” the scale value again.