I use Nova Prime + Tesla Unread ... every once in a while, Nova seems to get a mind of its own, and opens some random app instead of whatever app I just tapped on to open. When this happens, I have to reboot the phone. I have NO idea why this happens, but if all I have to do is reboot the phone, then it's not that big a deal to me ... especially since this phone completely reboots in about 30 second or less.
Just for clarity, ever since I moved over to android, I've found that android is just glitchy at times, period. I'm sure it has to do with how many pieces are in the puzzle ... google, samsung, at&t, nova, a gazillion separate app devs, etc. Not to mention how many different hardware manufacturers for android phones that are out there, and how many different models with different hardware/software features there are ... Sometimes, I'm honestly surprised that our phones work at all with how many layers of "stuff" there are between inception and use.
So, little things like apps hanging up, or needing to reboot my phone ... it just doesn't bother me. I'll trade that for the functionality and customization of android over "the other guys" ... Plus, Nova adds SO much more to the experience that I'd never give it up unless it really started to make my phone unusable ...