修改disabled

src/views/main/schedule-branch/modals/create.vue

@@ -69,7 +69,7 @@
                 clearable
                 filterable
                 v-model="matterItem.item"
-                :disabled="!isCreate"
+                :disabled="!isCreate && !!matterItem.item"
                 placeholder="请选择任务事项"
               >
                 <el-option v-for="(item,index) in matterTypesOptions"