Boss not switching targets

I have a boss mob that doesn't switch targets after killing someone, and i have no clue why. I tried enabling threat tables, targetselectors, and goalselectors, but nothing has worked so far. Below is the mob and relevant skills.

Mordred:
MobType: Vindicator
Display: '&4Mordred'
Health: 170
Damage: 4
Armor: 22
Modules:
ThreatTable: true
AIGoalSelectors:
- 0 Clear
- 1 meleeattack
- 2 RandomStroll
AITargetSelectors:
- 0 clear
- 1 Players
Disguise:
Type:...

Boss not switching targets