Interactions resetting horizontal scroll

I created a dynamic panel with horizontal scrolling enabled so that the user can scroll through various tiles. These tiles also have OnMouseEnter and OnMouseOut interactions.

The interactions seem to be resetting the horizontal scroll back to the beginning. Is it possible that I’m doing something wrong, or is this a bug?

Here’s a link to my prototype. The large tiles are the ones which have horizontal scroll.

I’m experiencing a very similar problem, but with vertical scrolling. Changing the visibility of an object within a dynamic panel also resets the scroll position in Axure 9 beta.

Is anyone at Axure aware of these scrolling problem?