diff --git a/frontend/app/components/platform/ScriptExplorer.tsx b/frontend/app/components/platform/ScriptExplorer.tsx
index c65f477..1556ca0 100644
--- a/frontend/app/components/platform/ScriptExplorer.tsx
+++ b/frontend/app/components/platform/ScriptExplorer.tsx
@@ -178,25 +178,29 @@ export function ScriptExplorer({
           </div>
         ) : (
           <>
-            {memberScriptGroups.map((group) => (
-              <WorkspaceTreeGroup
-                key={group.user?.user_id ?? "anon"}
-                title={`${group.user?.display_name}`}
-                scripts={group.scripts}
-                directories={group.directories}
-                selectedId={selectedId}
-                onSelect={onSelect}
-                onContextMenu={
-                  group.user?.user_id === user?.user_id
-                    ? onContextMenu
-                    : undefined
-                }
-                readOnly={group.user?.user_id !== user?.user_id}
-                expandedPaths={expandedPaths}
-                onToggle={onToggle}
-                loadingChildrenPaths={loadingChildrenPaths}
-              />
-            ))}
+            {memberScriptGroups.map((group) => {
+              const ownerKey = group.user?.user_id ?? "anon";
+              return (
+                <WorkspaceTreeGroup
+                  key={ownerKey}
+                  groupKey={`__group__${ownerKey}`}
+                  title={`${group.user?.display_name}`}
+                  scripts={group.scripts}
+                  directories={group.directories}
+                  selectedId={selectedId}
+                  onSelect={onSelect}
+                  onContextMenu={
+                    group.user?.user_id === user?.user_id
+                      ? onContextMenu
+                      : undefined
+                  }
+                  readOnly={group.user?.user_id !== user?.user_id}
+                  expandedPaths={expandedPaths}
+                  onToggle={onToggle}
+                  loadingChildrenPaths={loadingChildrenPaths}
+                />
+              );
+            })}
             {filteredScripts.length === 0 && (
               <div className="tree-empty">
                 <span className="tree-empty__icon">
diff --git a/frontend/app/features/platform/WorkspaceTree.tsx b/frontend/app/features/platform/WorkspaceTree.tsx
index b52cda2..34e0a42 100644
--- a/frontend/app/features/platform/WorkspaceTree.tsx
+++ b/frontend/app/features/platform/WorkspaceTree.tsx
@@ -1,4 +1,4 @@
-import { type MouseEvent as ReactMouseEvent } from "react";
+import { type MouseEvent as ReactMouseEvent, useEffect } from "react";
 
 import Icon from "../../components/common/Icon";
 import type {
@@ -23,12 +23,14 @@ type WorkspaceTreeProps = {
     target: WorkspaceTreeTarget,
   ) => void;
   readOnly?: boolean;
+  // 唯一标识此 group（通常 `__group__<owner_user_id>`），让多个 owner 的 group 各自独立展开。
+  groupKey: string;
   expandedPaths: Set<string>;
   onToggle: (path: string) => void;
   loadingChildrenPaths: Set<string>;
 };
 
-type WorkspaceTreeItemsProps = Omit<WorkspaceTreeProps, "title" | "readOnly"> & {
+type WorkspaceTreeItemsProps = Omit<WorkspaceTreeProps, "title" | "readOnly" | "groupKey"> & {
   path: string;
   depth: number;
 };
@@ -65,19 +67,27 @@ export function WorkspaceTreeGroup({
   onSelect,
   onContextMenu,
   readOnly = false,
+  groupKey,
   expandedPaths,
   onToggle,
   loadingChildrenPaths,
 }: WorkspaceTreeProps) {
-  const open = expandedPaths.has("");
-  const childrenLoading = loadingChildrenPaths.has("");
+  const open = expandedPaths.has(groupKey);
+  // 首次挂载自动展开（保留原本 useState(true) 的默认展开行为）。
+  // toggleExpanded 内识别 `__group__` 前缀，不会触发 loadChildren。
+  useEffect(() => {
+    if (!expandedPaths.has(groupKey)) {
+      void onToggle(groupKey);
+    }
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [groupKey]);
   return (
     <div className="tree-group">
       <button
         className={`tree-group__title${open ? " is-open" : ""}`}
         type="button"
         aria-expanded={open}
-        onClick={() => onToggle("")}
+        onClick={() => onToggle(groupKey)}
         onContextMenu={onContextMenu
           ? (event) => onContextMenu(event, { kind: "root", path: "" })
           : undefined}
@@ -86,7 +96,6 @@ export function WorkspaceTreeGroup({
         <Icon name="folder" size={17} />
         <span>{title}</span>
         <em>{scripts.length}</em>
-        {childrenLoading && <span className="loading-spinner" />}
       </button>
       {open && (
         <div className="tree-group__items">
diff --git a/frontend/app/features/platform/state/scriptWorkspaceStore.ts b/frontend/app/features/platform/state/scriptWorkspaceStore.ts
index c367b7b..6520189 100644
--- a/frontend/app/features/platform/state/scriptWorkspaceStore.ts
+++ b/frontend/app/features/platform/state/scriptWorkspaceStore.ts
@@ -293,7 +293,8 @@ export const useScriptWorkspaceStore = create<State>((set, get) => {
         next.delete(path);
       } else {
         next.add(path);
-        if (!state.loadedChildPaths.has(path)) {
+        // group key (`__group__<owner_id>`) 不是 workspace 路径,不调 loadChildren
+        if (!path.startsWith("__group__") && !state.loadedChildPaths.has(path)) {
           void get().loadChildren(path);
         }
       }