Quills mutation AV bug

Currently, level 13 quills mutation is at 9 AV instead of 6 AV

This occurred after some very long fights with eyeless crabs, rustaceans and Legendary Eyeless King Crabs. During these fights my AV was constantly cleaved to 0 and I would often dip below 50% quills.

Im guessing it comes from; Quills cleaved to 0 AV (-6) Quills < 50% 0 AV (-6, -3) Cleave wore off 6 AV (-3) Quills restored 9 AV