I was working on a short game using the "Platformer" example file.
I noticed that when I added a Scroll To behavior (to test the parallax layer settings), all the Box2D physics objects were behaving strangely, as if the Scroll To was scrolling beyond the layout rather than keeping within the boundaries. This resulted in the enemies glitching into platforms and the bullets shooting from the center of the screen rather than from the player.
I am hosting the broken and unbroken project files on Dropbox:
dl.dropboxusercontent.com/u/96056198/Bo/Beta%202.0/index.html
dl.dropboxusercontent.com/u/96056198/Bo/Beta%202.0%20Broken/index.html
dl.dropboxusercontent.com/u/96056198/Bo/Beta%202.capx
dl.dropboxusercontent.com/u/96056198/Bo/Beta%202%20Broken.capx