diff --git a/flutter/linux/my_application.cc b/flutter/linux/my_application.cc
index 6d101687b..05d420342 100644
--- a/flutter/linux/my_application.cc
+++ b/flutter/linux/my_application.cc
@@ -59,7 +59,12 @@ static void my_application_activate(GApplication* application) {
 
   FlView* view = fl_view_new(project);
   gtk_widget_show(GTK_WIDGET(view));
-  gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(view));
+  
+  auto border_frame = gtk_frame_new(nullptr);
+  gtk_frame_set_shadow_type(GTK_FRAME(border_frame), GTK_SHADOW_ETCHED_IN);
+  gtk_container_add(GTK_CONTAINER(border_frame), GTK_WIDGET(view));
+  gtk_widget_show(GTK_WIDGET(border_frame));
+  gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(border_frame));
 
   fl_register_plugins(FL_PLUGIN_REGISTRY(view));
 
diff --git a/flutter/pubspec.yaml b/flutter/pubspec.yaml
index 05c711dcf..c87bb02fb 100644
--- a/flutter/pubspec.yaml
+++ b/flutter/pubspec.yaml
@@ -64,7 +64,7 @@ dependencies:
     desktop_multi_window:
         git:
             url: https://github.com/Kingtous/rustdesk_desktop_multi_window
-            ref: fee851fa43116e0b91c39acd0ec37063dc6015f8
+            ref: 1818097611168f6148317f4c527aa45ff29d5850
     freezed_annotation: ^2.0.3
     tray_manager:
         git: