Enums dont generate dropdowns in the properties anymore?
Yes, you are right.
We want to improve the way how the collections and boolean properties are handled. Hopefully we will do it soon.
Solution for this case is using a control designer. You can take a look at how to create a widget - > advanced
Actually the enum can be used as a property of the control, but it is not represented as a DropDown.
the Telerik team