For me is every day, since i use to friendly battle about 5 times a day.
When friend accepts the battle starts at servers but my device keeps showing animated arena background forever.
i can hear battle sounds, but no touch response and only arena background showing.
so i close and reopen app, and voila: battle is at 2nd or 3rd round, because it started, but i was not able to play.
anyone else with same bug?
Android 8.0 and Samsung Galaxy S7