diff --git a/resources/assets/js/pages/manage/components/ProjectPanel.vue b/resources/assets/js/pages/manage/components/ProjectPanel.vue
index 8dd1684b0..9c0a99c29 100644
--- a/resources/assets/js/pages/manage/components/ProjectPanel.vue
+++ b/resources/assets/js/pages/manage/components/ProjectPanel.vue
@@ -1197,6 +1197,9 @@ export default {
         'parentTask.length'() {
             this.handleColumnDebounce();
         },
+        'projectData.task_num'() {
+            this.handleColumnDebounce();
+        },
         searchText() {
             this.handleColumnDebounce(true);
         },