
I began a new build after the last update and after a hundred phone and health issues.
Played to level 31 when suddenly the mobs' health bar began to show white (gray, clear?) instead of the usual red.
This cleared itself up after an hour of play, but was very troublesome for awhile as I play very fast and only check that health bar out the corner of my eye.
I always reboot my device before playing any game and kill all other apps.
I hope this was a one time incident, but thought you ought to know about it.