remove deleted objects from outbox

src/Model/chatModel.ts

@@ -267,6 +267,8 @@ export class Chat {
     UDN.sendMessage(chatMessage.channel, messageString);
 
     this.outbox.remove(chatMessage);
+    if (chatMessage.messageObject)
+      this.objectOutbox.remove(chatMessage.messageObject.id);
   };
 
   // objects

src/Views/Chat/itemDetailModal.tsx

@@ -21,7 +21,7 @@ export function ItemDetailModal(
   }
 
   function deleteAndClose() {
-    chat.objects.remove(object.id);
+    chat.deleteObject(object);
     closeModal();
   }