Would you be able to share the file with us, so we can take a look?
I would check to see if the name of the said arrow is the same in both states. With auto-animate, Xd checks the name of the elements to track their changes. If it's the name for the arrow is different between the two states, Xd will hide one arrow and show another, and between them there's a moment where both are not fully visible. Problem doesn't happen the first time over, because you're already at that state when you begin.
all of the arrows had the same name, that was the problem. so it was moving the arrow on the right to the left side.