I rooted it when it was on F180K20o, unlock bootloader with Freegee, and choose CWM to flash.
then I got in CWM to flash a CM11 nightly followed by Gapps.
It looks well but I cant use something like Titaniumbackup which require root. Tried a few root check apps and they said I am not rooted.
Why would that happen and how to fix it pls?