Sorry a repost as it might have got confused with Android 5 issues

Over the past couple of weeks I've experienced some problems with SD 3.2.0.28307 on my Nexus 7 (2012) running Android 4.4.4

On my last 2 flights the tablet has returned to the home screen every few minutes uncommanded. The log trail wasn't appearing when navigating but on landing I found the logs were recorded.

SD has always been totally reliable before but something odd has happened lately although I have not upgraded SD or Android, so I'm not sure why anything would have changed. Any ideas?

I see the Nexus 7 2012 is about to receive Android 5.0.2. Should we continue to hold off moving from KitKat?