It was finicky with me as well until I had iBus as my start up app. It's annoying but it stopped having issues with codings. I've started to have other odd things happen like wifi auto on/off as I hotspot and system completely rebooting for no reason at all. Gonna try and completely reset the system(as much as I don't want to as I have tons saved to internal memory) and see if it alleviates any/all of these issues.