I'm having problems with SU permissions in some apps on my Mi3 WCMDA. I'm using the last multi version (4.3.14). When it ask me for the permission I allow it, but the app gives me an error that says I must be root. The apps are dSploit and Network Spoofer, which worked well on my Wildfire S. I'm not having problems with other apps, so it's a bit strange. PS: With earlier versions of the ROM I had the same problem. EDIT: I solved the problem, just installed a previous version of BusyBox.