oh yep you're right, the improved husks mod developer specifically stated in comments they removed the friendly husks. have to verify cache files after removing that mod to make husks friendly again. Maybe you could make the priest version of the clothing force it somehow to override any other mods that disable friendly husks :)

Do you happen to have something like Improved Husks enabled? I'm not having this issue--the "Disguised as Husk" affliction is being correctly applied as far as I can tell but I will re-evaluate.

Make sure you're not using flashlights or diving suits either, as those will aggro husks regardless of what you do.

Husks attack both cultist and priest robed characters, which doesn't happen with the original cultist robe