Hullbreaker Sasquatch Attacking Party Members Outside Boss Room Bug (Not Knock-back)

[Newmn84]

Resubmitted with proper report template.

Time: March 5th, 2015 around 8:24 PM PST
Frequency: Only once (with another person commenting that it had also happened to them on the previous post which was moved to the Insufficient Information thread)
World name: Faerie
Character name: Windgrace Shinonome
NPC name: N/A
Monster name: Sasquatch
Class/Level: Paladin/50
Party or solo: Party, 4 people
In-game time: Roughly Midday based off the light levels.
Area and coordinates: Hullbreaker Isle Duty roughly at (X:15, Y:13), the bridge before the first boss room
Steps:

1. Pulled first set of mobs immediately up the path after buffs.
2. Incidentally got aggro on the the patrolling Harpeia mob, killed all mobs.
3. Hugged the right-most wall to skip the preying mantis mobs.
4. Killed the following monkey and the wasp.
5. Pulled every mob to the last two monkeys on the bridge in which case Sasquatch, instead of doing the knock-back move on the bridge when you get too close, charged the party and started attacking party members.
6. After all monsters were killed, Sasquatch retreated to the boss room as normal.

Connection Specs
- Verizon FiOS
- Actiontec/MI424WR

Model Number of the PlayStation®4 You Are Using
- Model Number: CUH-1001A

Additional Information:
- Sasquatch appeared on the enemy list but was untargetable and did not get affected by AOE enmity-generating moves such as Flash, at least to the best of my knowledge as it was somewhat hectic.
- Seems like the game treated the encounter as a boss battle due to the fact we gained access to two limit-break bars.
- Video evidence recorded via my PS4 of the event shortly after Sasquatch charged: https://www.youtube.com/watch?v=IxtjFSiQft4

[Highwilds]

He might have gotten pissed off at your party for bringing so many banana-stealing-monkeys to him! But looks interesting and something like part of the dungeon instead of a bug! Nice find though!