I love the new UI and features, but on my Gnex, the functionality was totally broken. The clock, temp and all of the info would never update. Say I set the widget up at 2:00 PM, the clock would stay at 2:00 PM forever, same with the temperature and other info. Also, it stuck to military time format (1400 instead of 2:00). It also seemed to affect all of my other widgets somehow; as in none of them would update their info either. I was getting all sorts of FCs this morning with System UI and other apps.
I see several other Gnex users in the app reviews on the Play Store complaining of this too. Hopefully they'll fix all of these bugs quickly, for now I restored my Titanium backup of the old version and haven't had any of the above issues