I've encountered the same problem. It is related to multi-window mode. Multiwindow side-menu not appearing and when I try enabling it buttons at the top in apps stops working. Disabling multiwindow mode makes it work again. But I'd like to return this feature but do not know how. It definately worked once I flashed this ROM but something got broken.The grid is set to 5x5. But this problems not only affects TouchWiz but all the other apps too. In none of the app I cannot use app menu becase I cannot not touch it. If I resize the window (means switching to multiwindow) application responds.
As I conclude on this, other than accesing status bar I cannot use the upper 1.5 cm of the screen.
got it working again by sticking two windows at the screen using corner swipe feature - side menu appeared and bug has gone
Last edited: