I'm experiencing an issue with the RadRibbonDropDownButton control where the DropDownContent is a ListBox with keyboard based navigation. I open the dropdown via the access key text, then use the arrow keys to select an item in the listbox, but when I press enter, nothing happens until I press another arrow key (or escape). At this point, the popup closes, but if I pressed an arrow key, it moves the selection prior to closing the popup. I'm not sure if I'm doing something wrong in my use of the control, or if this is a bug. Anyone have any experience with this?