Weird. If you click anywhere on the screen after printing, the platform behavior will start to work normally. Trying to find a work around so you don't have to click.
EDIT:
Apparently, it's a problem with the button object. Apparently it takes the focus out of the game when clicked.
If you substitute it for a sprite with the same behavior, it will work normally.
Check this, TabloidA
[attachment=0:3aa62ihx][/attachment:3aa62ihx]