Event's .Focused and .Unfocused not implementet to searchbar...?

I have Searchbars on my page and want to register the .Focused and the .Unfocused-events to the searchbars.

Unfortunately it seems, as the events are not fired by focus an unfocus the searchbars...

Do I missing something or are the events simply not yet implemented (I can register it without error-message (see code below), but they don't fire)?



If not yet implemented: will the events be implemented soon?

 SearchBarPLZOrt.Focused += (sender, e) =>
  {
     LVPLZOrt.IsVisible = true;
   };

SearchBarPLZOrt.Unfocused += (sender, e) =>
 {
     LVPLZOrt.IsVisible = false;
 };