"a zealot" summons firefly that is hostile to itself

[Hagbard]

Location
Aiwella Monastery

NPC
A Zealot

Issue
When engaged in combat, the NPC will summon "a firefly", which does not seem to have pet status to the NPC as they engage eachother in combat.

Expected Result
The firefly should not be hostile to the NPC

Actual Result
The firefly is hostile to the NPC

Reproducability
So far 2/2 times that it was fought by me and others.