Wrap delivery receipt sends in conversation.queueJob

js/background.js

@@ -32,8 +32,9 @@
         const source = sources[i];
         const timestamps = bySource[source].map(item => item.timestamp);
 
-        try {
         const c = ConversationController.get(source);
+        c.queueJob(async () => {
+          try {
             const { wrap, sendOptions } = ConversationController.prepareForSend(
               c.get('id')
             );
@@ -52,6 +53,7 @@
               error && error.stack ? error.stack : error
             );
           }
+        });
       }
     },
   });