I have been playing 888 Poker on mobile for about 4 months and haven't had any major problems. Only very seldom when im on table it sometimes lags behind during the game.
Recently I experienced a sudden exit from the application and after searching and asking specialists I found that the bug was from the phone. The app is good but needs a new look
I also use the mobile App for 888...Nothing disturbing for me related to your problem. The only thing that I'm not very fond of that app is that you cant play more then one table at the time.