AngerTime and AngryAt tags seem to be erased/will change in certain mobs in situations where it does not for others.

-Wolves will store their AngryAt tag, but will not make use of it until AngerTime is above 0

-Zombified piglins and iron golems will make use of their AngryAt tag regardless of AngerTime; their AngryAt tag only seems to be erased when AngerTime ticks from 1 to 0. May need further testing.

-Polar bears and bees will erase their AngryAt tag when their AngerTime is less than 1.

These bugs can currently only be experienced with data modify, but when MC-188497 is fixed these issues will likely be experienced in valid situations.

Have not tested with Endermen due to MC-188506.