Enhancement
(User-visible)
The DropDown now also displays icons if the options (items) have an icon defined. The icon is displayed in front of the item label when the DropDown is open. The item can also be seen in the button if the DropDown has a single selection and in the tags if it has a multiple selection.
Test
Select type with icon in DropDown (e.g. an enum with icon #27611).
Or under **Administration > Subject. Administration > Persons** edit a person and select a supervisor. (shown in the following screenshot)