diff --git a/shell/browser/native_window_views.cc b/shell/browser/native_window_views.cc
index f06f86e9c3a9e..63070c633724a 100644
--- a/shell/browser/native_window_views.cc
+++ b/shell/browser/native_window_views.cc
@@ -498,6 +498,13 @@ void NativeWindowViews::Show() {
   if (global_menu_bar_)
     global_menu_bar_->OnWindowMapped();
 #endif
+
+#if defined(USE_OZONE_PLATFORM_X11)
+  // On X11, setting Z order before showing the window doesn't take effect,
+  // so we have to call it again.
+  if (IsX11())
+    widget()->SetZOrderLevel(widget()->GetZOrderLevel());
+#endif
 }
 
 void NativeWindowViews::ShowInactive() {