Fixes a niche dufflebag issue (#19883)

* fixes chat issues

* removal fixes

* this

code/game/objects/items/weapons/storage/backpack.dm

@@ -383,9 +383,12 @@
 		playsound(src, 'sound/items/zip.ogg', 75, TRUE)
 		zipped = !zipped
 
-		if(!zipped && zip_time) // Handle slowdown and stuff now that we just zipped it
-			slowdown = 1
+		if(!zipped) // Handle slowdown and stuff now that we just zipped it
 			show_to(user)
+
+			if(zip_time)
+				slowdown = 1
+
 			return
 
 		slowdown = 0
@@ -395,14 +398,24 @@
 
 // The following three procs handle refusing access to contents if the duffel is zipped
 
-/obj/item/storage/backpack/duffel/handle_item_insertion(obj/item/I, prevent_warning)
+/obj/item/storage/backpack/duffel/handle_item_insertion(obj/item/I, prevent_warning, bypass_zip = FALSE)
+	if(bypass_zip)
+		return ..()
+
 	if(zipped)
 		to_chat(usr, "<span class='notice'>[src] is zipped shut!</span>")
 		return FALSE
 
 	return ..()
 
-/obj/item/storage/backpack/duffel/remove_from_storage(obj/item/I, atom/new_location)
+/obj/item/storage/backpack/duffel/removal_allowed_check(mob/user)
+	if(zipped)
+		to_chat(user, "<span class='notice'>[src] is zipped shut!</span>")
+		return FALSE
+
+	return TRUE
+
+/obj/item/storage/backpack/duffel/drop_inventory(user)
 	if(zipped)
 		to_chat(usr, "<span class='notice'>[src] is zipped shut!</span>")
 		return FALSE

code/game/objects/items/weapons/storage/storage.dm

@@ -93,6 +93,9 @@
 				continue
 			hide_from(player)
 
+/obj/item/storage/proc/removal_allowed_check(mob/user)
+	return TRUE
+
 /obj/item/storage/MouseDrop(obj/over_object)
 	if(!ismob(usr)) //so monkeys can take off their backpacks -- Urist
 		return
@@ -110,6 +113,9 @@
 	if((istype(over_object, /obj/structure/table) || isfloorturf(over_object)) && length(contents) \
 		&& loc == M && !M.stat && !M.restrained() && !HAS_TRAIT(M, TRAIT_HANDS_BLOCKED) && over_object.Adjacent(M) && !istype(src, /obj/item/storage/lockbox)) // Worlds longest `if()`
 		var/turf/T = get_turf(over_object)
+		if(!removal_allowed_check(M))
+			return
+
 		if(isfloorturf(over_object))
 			if(get_turf(M) != T)
 				return // Can only empty containers onto the floor under you
@@ -580,6 +586,8 @@
 
 	if((!ishuman(usr) && (loc != usr)) || usr.stat || usr.restrained())
 		return
+	if(!removal_allowed_check(usr))
+		return
 
 	drop_inventory(usr)