Problem with modifying UI loaded from XML

Hello!

Urho3D is taken from master branch.
I experience a problem with UI. If UI is loaded from an XML file I can’t modify it. For example,
ResourceCache * cache = GetSubsystem();
XMLFile * f = cache->GetResource( “UI/DesignSave.xml” );
UI * ui = GetSubsystem();
UIElement * uiRoot = ui->GetRoot();
SharedPtr e = ui->LoadLayout( f );
ui->GetRoot()->AddChild( e );
e->RemoveAllChildren(); // This line does internally clears “children_” array. But visually window remains unchanged.

The same happens when I try to add UI elements into a window loaded from an XML file. However, If I create a UI without loading it from a file it works fine.

Would one, please, let me know what might be wrong.

Thank you!
// Try to open the file in read-only mode
File* file = new File( context_, sceneFile);
// If we succeeded, set the "busy" flag
isSceneLoading = file->IsOpen();

gamescene_->LoadAsyncXML(file, LOAD_SCENE_AND_RESOURCES);

Use this guy

Also,
SubscribeToEvent(E_ASYNCLOADFINISHED, URHO3D_HANDLER(ClassName, OnSceneLoaded));

This way, the app rendering and update is not frozen during loading (we can get progress and do stuff) and we get notified when loading is done, and get handed a new scene object:) I spent week one on making sure I could do that stuff.

This is also the major reasoning behind my choice to start with a gamestate manager, a base gamestate class, and several derived gamestates, such as loadingstate and gameplaystate and introstate and such.