diff --git a/res/project_client.lua b/res/project_client.lua
index 03c43a4bc..16f607663 100644
--- a/res/project_client.lua
+++ b/res/project_client.lua
@@ -7,7 +7,7 @@ function on_menu_clear()
     end
 end
 
-function on_menu_setup()
+local function setup_backround()
     local controller = {}
     function controller.resize_menu_bg()
         local w, h = unpack(gui.get_viewport())
@@ -17,11 +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
+
+function on_menu_setup()
+    setup_backround()
     menu.page = "main"
     menu.visible = true
 end
diff --git a/res/scripts/stdmin.lua b/res/scripts/stdmin.lua
index f2201d949..4ae34b2fd 100644
--- a/res/scripts/stdmin.lua
+++ b/res/scripts/stdmin.lua
@@ -46,6 +46,7 @@ local _ffi = ffi
 function __vc_Canvas_set_data(self, data)
     if type(data) == "cdata" then
         self:_set_data(tostring(_ffi.cast("uintptr_t", data.bytes)), data.size)
+        return
     end
     local width = self.width
     local height = self.height
@@ -60,7 +61,7 @@ function __vc_Canvas_set_data(self, data)
     for i=0, size - 1 do
         canvas_ffi_buffer[i] = data[i + 1]
     end
-    self:_set_data(tostring(_ffi.cast("uintptr_t", canvas_ffi_buffer)), data.size)
+    self:_set_data(tostring(_ffi.cast("uintptr_t", canvas_ffi_buffer)), size)
 end
 
 local ipairs_mt_supported = false
diff --git a/src/content/ContentLoader.cpp b/src/content/ContentLoader.cpp
index c9b982810..ed4ab34d8 100644
--- a/src/content/ContentLoader.cpp
+++ b/src/content/ContentLoader.cpp
@@ -289,6 +289,7 @@ void ContentLoader::loadContent(const dv::value& root) {
             item.icon = def.name;
             item.placingBlock = def.name;
             item.tags = def.tags;
+            item.scriptFile = def.name + BLOCK_ITEM_SUFFIX + ".lua";
     
             for (uint j = 0; j < 4; j++) {
                 item.emission[j] = def.emission[j];
diff --git a/src/graphics/ui/elements/UINode.cpp b/src/graphics/ui/elements/UINode.cpp
index e62ff1df2..cbcb1c909 100644
--- a/src/graphics/ui/elements/UINode.cpp
+++ b/src/graphics/ui/elements/UINode.cpp
@@ -390,9 +390,14 @@ 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) {
diff --git a/src/items/ItemDef.cpp b/src/items/ItemDef.cpp
index 236efc6b2..bff25e7af 100644
--- a/src/items/ItemDef.cpp
+++ b/src/items/ItemDef.cpp
@@ -2,9 +2,10 @@
 
 #include "util/stringutil.hpp"
 
-ItemDef::ItemDef(const std::string& name) : name(name) {
-    caption = util::id_to_caption(name);
-    description = "";
+ItemDef::ItemDef(const std::string& name)
+    : name(name), 
+      caption(util::id_to_caption(name)),
+      scriptName(name.substr(name.find(':') + 1)) {
 }
 void ItemDef::cloneTo(ItemDef& dst) {
     dst.caption = caption;
diff --git a/src/items/ItemDef.hpp b/src/items/ItemDef.hpp
index 40e052b9c..ee37215a6 100644
--- a/src/items/ItemDef.hpp
+++ b/src/items/ItemDef.hpp
@@ -37,7 +37,7 @@ struct ItemDef {
     std::string caption;
 
     /// @brief Item description will shown in inventory
-    std::string description;
+    std::string description = "";
 
     dv::value properties = nullptr;
 
@@ -60,7 +60,7 @@ struct ItemDef {
     std::string icon = "blocks:notfound";
 
     std::string placingBlock = "core:air";
-    std::string scriptName = name.substr(name.find(':') + 1);
+    std::string scriptName;
 
     std::string modelName = name + ".model";