diff --git a/src/graphics/ui/GUI.cpp b/src/graphics/ui/GUI.cpp
index 08485201..55dd8ceb 100644
--- a/src/graphics/ui/GUI.cpp
+++ b/src/graphics/ui/GUI.cpp
@@ -5,6 +5,7 @@
 #include "elements/UINode.hpp"
 #include "elements/Label.hpp"
 #include "elements/Menu.hpp"
+#include "elements/Panel.hpp"
 
 #include "assets/Assets.hpp"
 #include "frontend/UiDocument.hpp"
@@ -23,8 +24,10 @@
 
 using namespace gui;
 
-GUI::GUI() : batch2D(std::make_unique<Batch2D>(1024)) {
-    container = std::make_shared<Container>(glm::vec2(1000));
+GUI::GUI()
+    : batch2D(std::make_unique<Batch2D>(1024)),
+      container(std::make_shared<Container>(glm::vec2(1000))) {
+    container->setId("root");
     uicamera = std::make_unique<Camera>(glm::vec3(), Window::height);
     uicamera->perspective = false;
     uicamera->flipped = true;
@@ -214,6 +217,14 @@ void GUI::draw(const DrawContext& pctx, const Assets& assets) {
     auto& viewport = ctx.getViewport();
     glm::vec2 wsize = viewport.size();
 
+    auto& page = menu->getCurrent();
+    if (page.panel) {
+        menu->setSize(page.panel->getSize());
+        page.panel->refresh();
+        if (auto panel = std::dynamic_pointer_cast<gui::Panel>(page.panel)) {
+            panel->cropToContent();
+        }
+    }
     menu->setPos((wsize - menu->getSize()) / 2.0f);
     uicamera->setFov(wsize.y);
 
diff --git a/src/graphics/ui/elements/Menu.cpp b/src/graphics/ui/elements/Menu.cpp
index da827489..d059d693 100644
--- a/src/graphics/ui/elements/Menu.cpp
+++ b/src/graphics/ui/elements/Menu.cpp
@@ -65,9 +65,10 @@ void Menu::setPage(Page page, bool history) {
     setSize(current.panel->getSize());
 }
 
-void Menu::back() {
-    if (pageStack.empty())
-        return;
+bool Menu::back() {
+    if (pageStack.empty()) {
+        return false;
+    }
     Page page = pageStack.top();
     pageStack.pop();
 
@@ -77,6 +78,7 @@ void Menu::back() {
     }
 
     setPage(page, false);
+    return true;
 }
 
 void Menu::setPageLoader(PageLoaderFunc loader) {
diff --git a/src/graphics/ui/elements/Menu.hpp b/src/graphics/ui/elements/Menu.hpp
index 478c985a..e3e134d6 100644
--- a/src/graphics/ui/elements/Menu.hpp
+++ b/src/graphics/ui/elements/Menu.hpp
@@ -54,7 +54,7 @@ namespace gui {
         PageLoaderFunc getPageLoader();
 
         /// @brief Set page to previous saved in history
-        void back();
+        bool back();
 
         /// @brief Clear pages history
         void clearHistory();
diff --git a/src/graphics/ui/elements/Panel.cpp b/src/graphics/ui/elements/Panel.cpp
index d76866f0..70446d7d 100644
--- a/src/graphics/ui/elements/Panel.cpp
+++ b/src/graphics/ui/elements/Panel.cpp
@@ -70,9 +70,6 @@ void Panel::remove(const std::shared_ptr<UINode> &node) {
 
 void Panel::refresh() {
     UINode::refresh();
-    std::stable_sort(nodes.begin(), nodes.end(), [](auto a, auto b) {
-        return a->getZIndex() < b->getZIndex();
-    });
 
     float x = padding.x;
     float y = padding.y;
@@ -80,20 +77,21 @@ void Panel::refresh() {
     if (orientation == Orientation::vertical) {
         float maxw = size.x;
         for (auto& node : nodes) {
-            glm::vec2 nodesize = node->getSize();
             const glm::vec4 margin = node->getMargin();
             y += margin.y;
             
             float ex = x + margin.x;
             node->setPos(glm::vec2(ex, y));
-            y += nodesize.y + margin.w + interval;
-
+            
             float width = size.x - padding.x - padding.z - margin.x - margin.z;
             if (node->isResizing()) {
-                node->setSize(glm::vec2(width, nodesize.y));
+                node->setMaxSize({width, node->getMaxSize().y});
+                node->setSize(glm::vec2(width, node->getSize().y));
             }
             node->refresh();
-            maxw = fmax(maxw, ex+node->getSize().x+margin.z+padding.z);
+            glm::vec2 nodeSize = node->getSize();
+            y += nodeSize.y + margin.w + interval;
+            maxw = fmax(maxw, ex+nodeSize.x+margin.z+padding.z);
         }
         actualLength = y + padding.w;
     } else {
diff --git a/src/graphics/ui/elements/UINode.cpp b/src/graphics/ui/elements/UINode.cpp
index 4ebe8c7a..f6444f41 100644
--- a/src/graphics/ui/elements/UINode.cpp
+++ b/src/graphics/ui/elements/UINode.cpp
@@ -195,7 +195,8 @@ glm::vec2 UINode::getSize() const {
 
 void UINode::setSize(glm::vec2 size) {
     this->size = glm::vec2(
-        glm::max(minSize.x, size.x), glm::max(minSize.y, size.y)
+        glm::max(minSize.x, glm::min(maxSize.x, size.x)),
+        glm::max(minSize.y, glm::min(maxSize.y, size.y))
     );
 }
 
@@ -208,6 +209,15 @@ void UINode::setMinSize(glm::vec2 minSize) {
     setSize(getSize());
 }
 
+glm::vec2 UINode::getMaxSize() const {
+    return maxSize;
+}
+
+void UINode::setMaxSize(glm::vec2 maxSize) {
+    this->maxSize = maxSize;
+    setSize(getSize());
+}
+
 void UINode::setColor(glm::vec4 color) {
     this->color = color;
     this->hoverColor = color;
diff --git a/src/graphics/ui/elements/UINode.hpp b/src/graphics/ui/elements/UINode.hpp
index af0ab145..2f62dd27 100644
--- a/src/graphics/ui/elements/UINode.hpp
+++ b/src/graphics/ui/elements/UINode.hpp
@@ -75,6 +75,8 @@ namespace gui {
         glm::vec2 size;
         /// @brief minimal element size
         glm::vec2 minSize {1.0f};
+        /// @brief maximal element size
+        glm::vec2 maxSize {1e6f};
         /// @brief element primary color (background-color or text-color if label)
         glm::vec4 color {1.0f};
         /// @brief element color when mouse is over it
@@ -224,6 +226,8 @@ namespace gui {
         virtual void setSize(glm::vec2 size);
         virtual glm::vec2 getMinSize() const;
         virtual void setMinSize(glm::vec2 size);
+        virtual glm::vec2 getMaxSize() const;
+        virtual void setMaxSize(glm::vec2 size);
         /// @brief Called in containers when new element added
         virtual void refresh() {};
         virtual void fullRefresh() {
diff --git a/src/graphics/ui/gui_util.cpp b/src/graphics/ui/gui_util.cpp
index 04026132..7fd40431 100644
--- a/src/graphics/ui/gui_util.cpp
+++ b/src/graphics/ui/gui_util.cpp
@@ -31,7 +31,17 @@ void guiutil::alert(
     const std::wstring& text,
     const runnable& on_hidden
 ) {
-    auto panel = std::make_shared<Panel>(glm::vec2(500, 300), glm::vec4(4.0f), 4.0f);
+    auto panel = std::make_shared<Panel>(
+        glm::vec2(
+            glm::min(
+                static_cast<size_t>(650),
+                glm::max(text.length() * 10, static_cast<size_t>(200))
+            ),
+            300
+        ),
+        glm::vec4(4.0f),
+        4.0f
+    );
     panel->setColor(glm::vec4(0.0f, 0.0f, 0.0f, 0.5f));
 
     auto menuPtr = engine.getGUI()->getMenu();
@@ -40,14 +50,15 @@ void guiutil::alert(
         menu.removePage("<alert>");
         if (on_hidden) {
             on_hidden();
-        } else {
-            menu.back();
+        } else if (!menu.back()) {
+            menu.reset();
         }
     };
     
     auto label = std::make_shared<Label>(text);
     label->setMultiline(true);
     label->setSize(glm::vec2(1, 24));
+    label->setAutoResize(true);
     panel->add(label);
     panel->add(std::make_shared<Button>(
         langs::get(L"Ok"), glm::vec4(10.f), 
@@ -56,6 +67,7 @@ void guiutil::alert(
         }
     ));
     panel->refresh();
+
     panel->keepAlive(Events::keyCallbacks[keycode::ENTER].add([on_hidden_final](){
         on_hidden_final();
         return true;
diff --git a/src/logic/scripting/lua/lua_custom_types.hpp b/src/logic/scripting/lua/lua_custom_types.hpp
index 56a3c83c..de65a913 100644
--- a/src/logic/scripting/lua/lua_custom_types.hpp
+++ b/src/logic/scripting/lua/lua_custom_types.hpp
@@ -23,6 +23,7 @@ namespace lua {
     public:
         LuaBytearray(size_t capacity);
         LuaBytearray(std::vector<ubyte> buffer);
+        LuaBytearray(const ubyte* data, size_t size);
         virtual ~LuaBytearray();
 
         const std::string& getTypeName() const override {
diff --git a/src/logic/scripting/lua/lua_util.cpp b/src/logic/scripting/lua/lua_util.cpp
index 23d13d7f..ce17c1d4 100644
--- a/src/logic/scripting/lua/lua_util.cpp
+++ b/src/logic/scripting/lua/lua_util.cpp
@@ -60,13 +60,7 @@ int lua::pushvalue(State* L, const dv::value& value) {
             break;
         case value_type::bytes: {
             const auto& bytes = value.asBytes();
-            createtable(L, 0, bytes.size());
-            size_t size = bytes.size();
-            for (size_t i = 0; i < size;) {
-                pushinteger(L, bytes[i]);
-                i++;
-                rawseti(L, i);
-            }
+            newuserdata<LuaBytearray>(L, bytes.data(), bytes.size());
             break;
         }
     }
diff --git a/src/logic/scripting/lua/usertypes/lua_type_bytearray.cpp b/src/logic/scripting/lua/usertypes/lua_type_bytearray.cpp
index fc7ecf6f..41b4ee59 100644
--- a/src/logic/scripting/lua/usertypes/lua_type_bytearray.cpp
+++ b/src/logic/scripting/lua/usertypes/lua_type_bytearray.cpp
@@ -14,6 +14,9 @@ LuaBytearray::LuaBytearray(size_t capacity) : buffer(capacity) {
 LuaBytearray::LuaBytearray(std::vector<ubyte> buffer) : buffer(std::move(buffer)) {
 }
 
+LuaBytearray::LuaBytearray(const ubyte* data, size_t size) : buffer(data, data + size) {
+}
+
 LuaBytearray::~LuaBytearray() {
 }
 
diff --git a/src/network/Network.cpp b/src/network/Network.cpp
index 24cfe718..efa9352a 100644
--- a/src/network/Network.cpp
+++ b/src/network/Network.cpp
@@ -319,7 +319,6 @@ public:
     ~SocketConnection() {
         if (state != ConnectionState::CLOSED) {
             shutdown(descriptor, 2);
-            closesocket(descriptor);
         }
         if (thread) {
             thread->join();
@@ -382,6 +381,9 @@ public:
     }
 
     int send(const char* buffer, size_t length) override {
+        if (state == ConnectionState::CLOSED) {
+            return 0;
+        }
         int len = sendsocket(descriptor, buffer, length, 0);
         if (len == -1) {
             int err = errno;
@@ -444,7 +446,7 @@ public:
         hints.ai_family = AF_INET;
         hints.ai_socktype = SOCK_STREAM;
 
-        addrinfo* addrinfo;
+        addrinfo* addrinfo = nullptr;
         if (int res = getaddrinfo(
             address.c_str(), nullptr, &hints, &addrinfo
         )) {
@@ -452,12 +454,11 @@ public:
         }
 
         sockaddr_in serverAddress = *(sockaddr_in*)addrinfo->ai_addr;
-        freeaddrinfo(addrinfo);
         serverAddress.sin_port = htons(port);
+        freeaddrinfo(addrinfo);
 
         SOCKET descriptor = socket(AF_INET, SOCK_STREAM, 0);
         if (descriptor == -1) {
-            freeaddrinfo(addrinfo);
             throw std::runtime_error("Could not create socket");
         }
         auto socket = std::make_shared<SocketConnection>(descriptor, std::move(serverAddress));