I tried to find a pattern to reproduce this issue. But there is none. The best way is to restart the phone, open the browser + uapp-explorer+youtube-app. Load something and begin switching. Mostly it works in the actual RC channel well, then something starts hanging which makes the browser restart and reload the startpage.
Same thing happens with browser+N5-camera that crashes. Email i didnt test since dekko2 has problems.
I also saw with systemsettings., but not often.
Could be an out of memory issue, but i could not trigger it...