Graphics Bug in Nether Realm

The graphics bug started after I took the Strife punishment. It didn’t start to happen immediately but only after completing the Nether level and only the extra spawned enemies remained. I attached screenshots of this bug.

Device: Apple iPad Air 1
Operating System: iOS 10.3.3
Game Version: 2.4.5 (although the in-game title screen incorrectly shows 2.4.4)