KitKat 4.4 :: Favorites Tray - Lost Camera Icon

Kit Kat 4.4, Moto X, probably not a version issue but here goes:

Seems that I had the phone on in my pocket and the camera Icon got oddly stuck partially visible off the bottom of the screen from an inadvertent pocket long press. Then the camera icon went away altogether.

Now when I try to add an icon in the spot where it was (lower right stock position) a black circle appears and swallows up whatever I put there. It's like a folder, but it is invisible until I try to place the camera icon or any other icon there. Acts like a black hole. I can add the camera Icon back to any home screen, just not to that far right spot on the favorites tray.