I've been feeding the bots....

Not sure what's up but last few days/week? Every 12(random estimate could be less could be more) arenas when joining my game freezes and I have to force stop raid. I lose some points(who cares) and I lose a arena token(care mucho).

This is on a Android phone.

I know the bots are hungry and probably have a good laugh seeing their defense stomped my team but wtf, medals ain't gonna farm themselves. Is this just me or is there a bug going on?