Bloody Eyeball Mask not working

I can't see rangers who hide in the skulls while wearing this civilized 1359/1344hp(101%) 492/495m(99%) 1236/1236mv(100%) 31911tnl (-81.31%) 5 AM wear mask l You wear a bloody eyeball fetish mask on your face. As you grip a bloody eyeball fetish mask, your vision sharpens. You harness the eyes of the dead to hunt down those who would hide in your home. The sun rises above the horizon. As the chief can see anyone else, is it working as it is supposed to, and only able to see orcs and goblins that hide in village as assassins can't. I did this test with a ranger and could not see him.