ee

code/game/atoms_movable.dm

@@ -646,3 +646,10 @@
 	animate(I, alpha = 175, pixel_x = to_x, pixel_y = to_y, time = 3, transform = M, easing = CUBIC_EASING)
 	sleep(1)
 	animate(I, alpha = 0, transform = matrix(), time = 1)
+
+/atom/movable/proc/set_anchored(anchorvalue) //literally only for plumbing ran
+	SHOULD_CALL_PARENT(TRUE)
+	if(anchored == anchorvalue)
+		return
+	. = anchored
+	anchored = anchorvalue

code/modules/plumbing/ducts.dm

@@ -66,7 +66,6 @@ All the important duct code:
 	if(active)
 		attempt_connect()
 
-	AddElement(/datum/element/undertile, TRAIT_T_RAY_VISIBLE)
 
 ///start looking around us for stuff to connect to
 /obj/machinery/duct/proc/attempt_connect()