This discussion was created from comments split from: Game restarting.
Seriously this is becoming a huge and expensive pain in neck! Literally no rhyme or reason, no other event starting, no specific amount of time away, no connection problems.. you look away annnnd it’s gone! Restarts with the Marvel logo and your team is injured with a lost match to boot. Super annoying.
*Created new thread, since old thread contained irrelevant and/or no-longer-accurate information
This never happens on my new Galaxy S9+ which has 6 gigs of Ram (it happened occasionally on my old HTC One M8 that had 2 Gigs of RAM).
I suspect your phone/device is running out of RAM. On my old phone I ended up force closing a lot of other apps so that not much was running other than MPQ when I wanted to do an uninterrupted gaming session.
KGB