This only happens on my LG G3 2GB Ram with KitKat.
I previously had a MotoX 1st gen (also KitKat) and it didn't happen.
When I switch from my app (a game) to another app (Camera or Chrome, for example), then I go back to my game, it restarts.
On my MotoX, even after many app switches, when I switched back to my game it was still running.
1. Is there a way to prevent the game being "garbage collected"?
2. Is this a LG G3 bug?
Tried to find any info about it for many days and found nothing.