When a Vindicator is named Johnny, they’ll obviously gain the ability to target almost any mob in the game. However, even if they are then re-re named and their Johnny name is removed, they will continue pursuing a target, even if it’s a mob Vindicators normally ignore.
How to replicate:
Spawn a Vindicator, name it “Johnny” and trap it in a boat
Spawn a different mob that the Johnny Vindicator attacks
Give the Vindicator a different name
Expected result:
The Vindicator lowers it’s axe
Actual result:
The Vindicator keeps targeting the mob
This is working as intended, see MC-108481.