Passive Subscreen Item Bug(?)

If you have a "current item" in a passive subscreen and change from a sideview screen to normalview, it will "bounce", you can see it in this quest file: https://www.dropbox.com/s/j2ocsafbyej1rtb/SideScrollerBugged.qst?dl=0 the global script is http://pastebin.com/ZhDpyZcj
Press "R" to jump.