sigh

code/game/objects/items/mop.dm

@@ -58,7 +58,7 @@
 	if(T)
 		user.visible_message("[user] cleans \the [T] with [src].", "<span class='notice'>You clean \the [T] with [src].</span>")
 		clean(T)
-		user.changeNext_move(CLICK_CD_MELEE)
+		user.DelayNextAction(CLICK_CD_MELEE)
 		user.do_attack_animation(T, used_item = src)
 		if(istype(L))
 			L.adjustStaminaLossBuffered(stamusage)
@@ -128,4 +128,4 @@
 	return ..()
 
 /obj/item/mop/advanced/cyborg
-	insertable = FALSE
+	insertable = FALSE

code/game/objects/items/signs.dm

@@ -40,4 +40,3 @@
 			user.visible_message("<span class='warning'>[user] waves around \the \"[label]\" sign.</span>")
 		else
 			user.visible_message("<span class='warning'>[user] waves around blank sign.</span>")
-		user.changeNext_move(CLICK_CD_MELEE)