I've got SlimRom nand backup too, I'll try it on there.
EDIT: Yeah, doesn't work on that either, I think both are based on CM11 though if that makes a difference. Also, I had changed the choice of navigation bar buttons, would that matter?]
I use menu, home, back and long pressing on back brings up recents.
If it helps, My face unlock also didn't show when I disabled the nav bar, when I enabled it again, back came the face unlock.
In other views...I wish xposed would go on the play store and have integration so your choice of modules could be saved under your google account.