There is a bug with the Dropdown button that disallows to select anything from date editor placed on the control container when the calendar popup is outside the container. You can even see that on the Dropdown button tutorial attached to the latest versions of DevExpress (.NET). Try to select any of the items from the area surrounded by the red line (see screenshot). Instead of selection, the dropdown panel closes.
I think this is not a problem of Date editor but the drop down button that always closes when user clicks outside its boundaries. But in this particular situation it should not, as the calendar popup belongs to the control placed on the container...
Jacek
Steps to Reproduce:
1. execute Dropdown button tutorial from latest DevExpress .NET demo.
2. thy to press TODAY on the calendar of date editor on the container.
Actual Results:
container closes
Expected Results:
it should remain open and the date should be changed to TODAY.