Is this some sort of glitch/exploit or is this just Pokemon Go being Pokemon Go?

So many times now, I have been in the middle of a GBL battle when either I or my opponent uses a charged attack and freezes the game. Then it’ll just be stuck on this screen until I restart my game and I lose the match, even if my opponent was on his last Pokemon with no shields and I was about to win like in the screenshot above. I have read about how people have figured out a way to like “stall” a match (if I remember correctly) by swiping down/up to bring up the phone’s quick settings. So I’m not sure if this could be a variation of that or if it’s just another thing Pokemon Go sucks at. I know it’s not a huge deal, but once it happens so many times it just gets so irritating