I've also experienced this bug many times since OTA-10. I've seen it with the System Settings app and with Telegram, but that's probably because they are the only apps which I usually leave open in the background.
What happens is that, after I get back to these apps, they are completely frozen; if I rotate the phone, the apps also do rotate, but only as a static image, without properly resizing. They only way to bring them back to life is by swiping them off (to kill them) and restart them.
I've also experienced this bug many times since OTA-10. I've seen it with the System Settings app and with Telegram, but that's probably because they are the only apps which I usually leave open in the background.
What happens is that, after I get back to these apps, they are completely frozen; if I rotate the phone, the apps also do rotate, but only as a static image, without properly resizing. They only way to bring them back to life is by swiping them off (to kill them) and restart them.