diff --git a/res/scripts/stdlib.lua b/res/scripts/stdlib.lua
index d5cd34bd..79482c3e 100644
--- a/res/scripts/stdlib.lua
+++ b/res/scripts/stdlib.lua
@@ -229,7 +229,7 @@ function gui.template(name, params)
     text = text:gsub("%%{([^}]+)}", function(n) 
         local s = params[n]
         if type(s) ~= "string" then
-            return s
+            return tostring(s)
         end
         if #s == 0 then
             return
diff --git a/src/graphics/ui/elements/Container.cpp b/src/graphics/ui/elements/Container.cpp
index eddde7e2..b930d76a 100644
--- a/src/graphics/ui/elements/Container.cpp
+++ b/src/graphics/ui/elements/Container.cpp
@@ -71,10 +71,7 @@ void Container::mouseRelease(int x, int y) {
 }
 
 void Container::act(float delta) {
-    if (mustRefresh) {
-        refresh();
-        mustRefresh = false;
-    }
+    UINode::act(delta);
     for (const auto& node : nodes) {
         if (node->isVisible()) {
             node->act(delta);
@@ -167,6 +164,12 @@ void Container::add(const std::shared_ptr<UINode>& node) {
     node->setParent(this);
     node->reposition();
     mustRefresh = true;
+
+    auto parent = getParent();
+    while (parent) {
+        parent->setMustRefresh();
+        parent = parent->getParent();
+    }
 }
 
 void Container::add(const std::shared_ptr<UINode>& node, glm::vec2 pos) {
diff --git a/src/graphics/ui/elements/Container.hpp b/src/graphics/ui/elements/Container.hpp
index 459d5b07..d3dbbfc7 100644
--- a/src/graphics/ui/elements/Container.hpp
+++ b/src/graphics/ui/elements/Container.hpp
@@ -9,7 +9,6 @@
 namespace gui {
     class Container : public UINode, public ::util::ObjectsKeeper {
         int prevScrollY = -1;
-        bool mustRefresh = true;
     protected:
         std::vector<std::shared_ptr<UINode>> nodes;
         std::vector<IntervalEvent> intervalEvents;
diff --git a/src/graphics/ui/elements/UINode.hpp b/src/graphics/ui/elements/UINode.hpp
index e03eb91e..53854db5 100644
--- a/src/graphics/ui/elements/UINode.hpp
+++ b/src/graphics/ui/elements/UINode.hpp
@@ -66,6 +66,7 @@ namespace gui {
     class UINode : public std::enable_shared_from_this<UINode> {
     protected:
         GUI& gui;
+        bool mustRefresh = true;
     private:
         /// @brief element identifier used for direct access in UiDocument
         std::string id = "";
@@ -131,7 +132,12 @@ namespace gui {
 
         /// @brief Called every frame for all visible elements 
         /// @param delta delta timУ
-        virtual void act(float delta) {};
+        virtual void act(float delta) {
+            if (mustRefresh) {
+                mustRefresh = false;
+                refresh();
+            }
+        };
         virtual void draw(const DrawContext& pctx, const Assets& assets) = 0;
 
         virtual void setVisible(bool flag);
@@ -275,5 +281,9 @@ namespace gui {
             const std::shared_ptr<UINode>& node,
             const std::string& id
         );
+
+        void setMustRefresh() {
+            mustRefresh = true;
+        }
     };
 }