add define

NEG/UI/UnityUi/MonoUiManager.cs

@@ -18,6 +18,7 @@ namespace NEG.UI.UnityUi
     /// <para>You have to provide prefabs within resources:</para>
     /// <para> - UI/PopupCanvas - prefab with canvas to create popups (will be created on every scene)</para>
     /// <para> - UI/DefaultPopupPrefab - prefab of default popup with 2 options (has to have <see cref="MonoDefaultPopup"/> component)</para>
+    /// NEG_UI_DISABLE_WARNING_DEFAULT_SELECTION
     /// </summary>
     public class MonoUiManager : UiManager, IDisposable
     {

NEG/UI/UnityUi/Window/MonoWindow.cs

@@ -58,8 +58,10 @@ namespace NEG.UI.UnityUi.Window
         {
             if (controller == null)
                 controller = GetComponent<WindowController>();
+            #if !NEG_UI_DISABLE_WARNING_DEFAULT_SELECTION
             if(defaultSelectedItem == null)
                 Debug.LogWarning($"Window {name} should have default selected item set");
+            #endif
         }
 
         public void OpenWindow(IWindow window, object data = null)