So ever since the game got updated the stability has gone to hell. The app closed itself 3 times on me while in a duel (1x war, 2x raids), and is very volatile all the other times. You switch to another app quickly (mail, messenger,…) - it shuts down completely and needs to be started again. You have another app running while you start (audio player, etc…) the game kills this app as soon as it is fully loaded.
Getting annoyed by that flawy updates…