Steam Overlay doesn't stop game from taking controller input

[Gaiba]

I think this has been happening to me in multiple games, but basically while playing with a controller and tapping my home button to open the big picture mode/steam overlay, when I'm moving around the overlay UI, the controller still affects the game I'm playing. Sometimes I've navigated the steam menu and accidentally completely quit the game because of this. Anything I can do to fix this? Thanks.

[Cosmic Beard]

This is happening to me all of a sudden...have you figured out a solution to this? I have no clue what's causing this to happen all of a sudden.