ASDropDown - unable to select from SD

I was trying to add new DropDown field to selection dialog. There are two DropDown objects on form - copy of existing SD form.

I was expecting to pick “gx” element from SD Toolbox as usually and add in ScreenSection.

Instead I’ve got AsTextBox added. No DropDown. On new, clean ScreenSection, adding DropDown object from SD datasource not functioning too.

Tested in 2025.4.0 and 2025.5.2 architect version. The same behavior.

If the field has a defined DefaultLookup, the toolbox offers an AsCombo control for such fields.
In the case of SD, there are no such definitions.

To get an AsCombo control for such a field, select the field in the fields section of the toolbox. Then switch to the Widgets section of the toolbox and drag the AsCombo control from there. The resulting control will be automatically bound to the selected field.