I’ve had this problem too, so we just basically shut it off to charge it once we plugged it in. But i didn’t notice any problems with the home button use though. This was an older iPad so I wasn’t worried about it as I was given it to somebody.. but when it stops charging, it’s probably a tri starship. If you having a tri star/ hydra checker you can test it. I do think I recall that on one of the nine pathways there was one or two that weren’t within the proper parameter of the device, but I didn’t feel like I wanted to go and change the chip to see .because that’s where the charging system goes through to charge the battery .Just a thought.