Mobs stop while a warden is roaring

This issue is fixed.

Mobs stop while a warden is roaring. Wardens roar when they detect another mob.

But while a warden is roaring, All mobs stop.

Steps of reproduce

1. Summon a warden
2. Summon some other mobs
3. Wait a few minutes until the warden detects someone

Expected results

Mobs move normally.

Observed results

Mobs move abnormally or stop.