Canvas fabric.js: why is the wrong value set?

Question

JavaScript

I set the value, but after checking, something increments/decreases the value by 3 or some cosmic number.

var h = parseInt(heightElInput.value);
position.cursorOnElElemetObj.set({
      height: h,
      cacheHeight: h
});

jsfiddle
Video of the bug
I really need help.

Answer 1

On line 45 instead of
Do
n't ask me why, I don't know myself. I just found an error and that's it.