***This has a high possibility of being a device issue, but I thought I would post it here just in case it isn’t.
I was playing on my iPad Air (iOS 12.4.6) earlier today, and I couldn’t seem to get out of the app. Neither the home button, swiping out of the app, nor trying to restart my device did anything to help. I found that I could turn my iPad off and on, and that the home button was still working, just not while I was in the app. I was able to get out of Blockheads by dual screening, which somehow crashed the game. I’m frankly unsure of how this happened.