The one fighter at the entrance of the gas fields (Terrace of the Tenders) and the one in the gas-fields are hostile to other NPCs.
They attack the other passive NPCs and even the fighters at Shrine of the Oracle.
Steps on how to reproduce issue:
Run past the fighter at the entrance of the gas-fields (when coming from the Shrine)
As the new patch the NPCs will follower you longer
See that his aggro shifts to other passive NPCs and proceed to kill them
See that the other fighter also turns hostile to the cook next to him. They 2 dont attack each other, but turn aggro on me again.