移除可以与同一用户创建多个会话的特性

ui/components/scratchpad/reducers/records.js

@@ -15,8 +15,7 @@ export default function reducer(state = {
   }
   case 'SCRATCHPAD_RECORDS_PUSH': {
     const { rdoc } = action.payload;
-    if (rdoc.uid !== UserContext.uid
-      || rdoc.domain_id !== UserContext.domain
+    if (rdoc.uid !== UserContext._id
       || rdoc.pid !== Context.problemId
     ) {
       return state;