temporary fix improvement

res/project_client.lua

@@ -1,16 +1,13 @@
 local menubg
 
 function on_menu_clear()
-    print("menu clear")
     if menubg then
         menubg:destruct()
         menubg = nil
     end
 end
 
-function on_menu_setup()
-    -- //TODO: 
-    time.post_runnable(function()
+local function setup_backround()
     local controller = {}
     function controller.resize_menu_bg()
         local w, h = unpack(gui.get_viewport())
@@ -20,13 +17,16 @@ function on_menu_setup()
         end
         return w, h
     end
-        gui.root.root:add(
-        "<image id='menubg' src='gui/menubg' size-func='DATA.resize_menu_bg' "..
-        "z-index='-1' interactive='true'/>", controller)
-        menubg = gui.root.menubg  
+    local bgid = random.uuid()
+    gui.root.root:add(string.format(
+        "<image id='%s' src='gui/menubg' size-func='DATA.resize_menu_bg' "..
+        "z-index='-1' interactive='true'/>", bgid), controller)
+    menubg = gui.root[bgid]
     controller.resize_menu_bg()
-    end)
+end
 
+function on_menu_setup()
+    setup_backround()
     menu.page = "main"
     menu.visible = true
 end

src/graphics/ui/elements/UINode.cpp

@@ -390,10 +390,15 @@ void UINode::getIndices(
     const std::string& id = node->getId();
     if (!id.empty()) {
         const auto& found = map.find(id);
-        if (found == map.end() || found->second.expired()) {
-            map[id] = node;
+
+        if (found != map.end()) {
+            auto prev = found->second.lock();
+            if (prev && prev->getParent()) {
+                return;
             }
         }
+        map[id] = node;
+    }
     auto container = std::dynamic_pointer_cast<gui::Container>(node);
     if (container) {
         for (const auto& subnode : container->getNodes()) {