Adding a Drawer with a non-zero drag margin will create a dead zone on all other views in the same app. If the dragMargin is set to the right side, then this will inhibit the user's ability to interact with scroll bars set on the right side. Scroll bars will not respond to clicks or drags. 

A sample app showing that a drawer on the back side of a flippable makes the view on the front side of the flippable is attached.