Checkbox within ContextMenu closes menu. Any way to keep it open?
<p>I've implemented a ContextMenu where the items have checkboxes enabled via setCheckable(true).  What seems strange to me is that the context menu closes as soon as I click the checkbox.  These are not set up as radio buttons (implying single selection) and since the nature of checkboxes are to allow multiple selection, I'm unsure of how to prevent the context menu from closes when the checkbox is clicked.</p>

<p>Am I overlooking some property?  Thanks in advance...</p>
