that was stupid

code/game/turfs/turf.dm

@@ -226,6 +226,8 @@
 		for(var/obj/structure/cable/C in contents)
 			qdel(C)
 
+	smooth_icon(src)
+
 /turf/simulated/AfterChange(ignore_air, keep_cabling = FALSE)
 	..()
 	RemoveLattice()
@@ -477,4 +479,4 @@
 	SSair.add_to_active(T0,1)
 
 /turf/AllowDrop()
-	return TRUE
+	return TRUE