Yesterday my Instinct locked up for about 30 minutes.

Yesterday my Instinct locked up for about 30 minutes. The cclock facre was stuck at 11:30 AM. It would not rerspond to any button presses. Eventually after pressing CTRL for an extended time it turned off. When I turned it back on it was working again but was disconnected from the Connect app and the app could not find it. I eventually got it into pairing mode.  Is the lock up a known issue and what may have caused it?