When enemy health bar is set to "no", the NPC buy/sell/dot dot dot icons go away when in town. Unsure if they also go off in combat space. The "hurt" setting has Town NPC icons shown always, so it stands to reason "off" should not impact Town NPC's.
#Setting Enemy health bars to off also turns off Town NPC icons
hollow glacier
Ok, I have confirmed that NPC icons, like the NPC outside Dark Citadel and the equipment wagon do not have there "..." icon if enemy health bar is set to "no".