Ask HN: Does your iPhone's hotspot stay on?

So while back for Thanksgiving I have noticed that my dad's hot spot was always on. Him having an iPhone. I told him so he opened up his settings and it said off. But as soon as he'd open his settings I'd be disconnected. Then as soon as he left the settings and went to the home screen I could reconnect and it'd give him the little blue notification. After playing around with this for about ten minutes it stopped reproducing.

We were using his iPhone and his macbook. Has this glitch happened to anyone else?