Context Menu not allways closing

Hi,

i have a problem with the context menu in ckEditor.
The context menu is not closing allways.

Steps to reproduce:
Add a table to an empty control.
Right click into the table (context menu will open)
Navigate to a submenu e.g. Insert Cell Before but dont click
Navigate to Paste (or any other item without submenu) without leaving menu area but dont click
Navigate left leaving the context menu and click to the content.
The context menu will stay and just disappear when selecting a menu item or
right click somewhere else in the ckeditor control.
When leaving the contrext menu before hovering the Paste the context menu will close
when clicking into the content.

This behaviour is shown in all browers and also shown in the online demo
http://ckeditor.com/demo

Any idea how to fix that?

Thanks a lot

Martin