diff --git a/src/ui/Menu/PlayManagerMenu.cpp b/src/ui/Menu/PlayManagerMenu.cpp
index 77fe6401..e2f26861 100644
--- a/src/ui/Menu/PlayManagerMenu.cpp
+++ b/src/ui/Menu/PlayManagerMenu.cpp
@@ -118,6 +118,10 @@ void PlayManagerMenu::OnWorkspaceChange(WorkSpace* workSpace) {
     }
     workSpace_ = workSpace;
     connect(workSpace, &WorkSpace::TimestepChanged, this, &PlayManagerMenu::OnTimestepChanged);
+    // 若当前 workspace 已有 timestep，则立即刷新一次 UI
+    if (auto* timestep = workSpace->GetTimestep()) {
+        OnTimestepChanged(timestep);
+    }
 }
 
 void PlayManagerMenu::OnTimestepChanged(Timestep* timestep) {