It is not possible to catch key event when deleting list

[Jakub Ś]

1. Setup editor

   var editor = CKEDITOR.replace( 'editor1' );
   			editor.on( 'pluginsLoaded', function( evt )
   			{				
   				editor.on( 'contentDom', function( e )
   				{
   					var editable = editor.editable();
   					var doc = editor.document;
   					var wasKeyboardAlreadyUsed = false;
   					editable.attachListener( doc, 'keydown', function( event ) 
   					{							
   						console.log('key');
   					});						
   							
   				});
   			});		
   

2. Open page and insert list into editor
3. Select whole list with mouse and press delete or backspace.

Result: key event isn't caught.

Problem can be reproduced from CKEditor 4.0.