One more

code/modules/reagents/reagent_containers/hypospray.dm

@@ -44,6 +44,8 @@
 		var/trans = reagents.trans_to_mob(M, amount_per_transfer_from_this, CHEM_BLOOD)
 		admin_inject_log(user, M, src, contained, trans)
 		to_chat(user,"<span class='notice'>[trans] units injected. [reagents.total_volume] units remaining in \the [src].</span>")
+		
+	update_icon()
 
 	return
 
@@ -65,7 +67,6 @@
 	..()
 	if(reagents.total_volume <= 0) //Prevents autoinjectors to be refilled.
 		flags &= ~OPENCONTAINER
-	update_icon()
 	return
 
 /obj/item/weapon/reagent_containers/hypospray/autoinjector/update_icon()

code/modules/reagents/reagent_containers/inhaler.dm

@@ -66,13 +66,14 @@
 		playsound(src.loc, 'sound/items/stimpack.ogg', 50, 1)
 		to_chat(user,"<span class='notice'>[trans] units injected. [reagents.total_volume] units remaining in \the [src].</span>")
 
+	update_icon()
+
 	return
 
 /obj/item/weapon/reagent_containers/inhaler/attack(mob/M as mob, mob/user as mob)
 	..()
 	if(reagents.total_volume <= 0) //Prevents autoinjectors to be refilled.
 		flags &= ~OPENCONTAINER
-	update_icon()
 	return
 
 /obj/item/weapon/reagent_containers/inhaler/update_icon()

html/changelogs/burgerbb-fixes.yml

@@ -36,3 +36,4 @@ delete-after: True
 changes: 
   - bugfix: "Fixes condiments, including salt and pepper, not being able to be poured."
   - bugfix: "Fixes objects getting stuck in xenobiology disposals."
+  - bugfix: "Fixes autoinhalers and autoinjectors refusing to change their icons after use."