fluentribbon/Fluent.Ribbon — pull request #5 by GeertvanHorrik (2014-11-03 21:21:25+00:00)
Title: Added DropDownButton.ClosePopupOnMouseDown property which defaults to fa...

...lse. If true, it will close the drop down popup automatically when a mouse down event occurs.

As you can see, I also updated the example so you can see that this is a non-breaking change to existing apps, but will add new functionality.