Important for me too...
I use my RadComboBox with Checkbox as a FilterTemplate.
Currently when I check some items - the RadGrid do refresh and I have proper results. But my combo is cleared and all items are unchecked. I do check them by using :
o, RadComboBoxItemEventArgs e)
> linie =
 tmp = obiekt.Value.ToString().Split(
Filtry is my list of filters I used in RadGrid so I can access them in other events. I'm looking for data for "linia" as its the combo with checkboxes.
But now because combo is cleared - when I want to uncheck those items - first click makes the text appear again, second click - makes the text disappear and only then the checkbox is not checked. Very very strange :/