Happens in all versions of VDF/DF (alpha 1 included)

Code:
Use DfAllEnt

Object oPanel is a Panel
    Set Size to 200 200
    Object oCombo is a ComboForm
        Set Size to 15 50
        Set Entry_State to False
        Set Combo_Sort_State to False
        Procedure Combo_Fill_List
            Send Combo_Add_Item "A"
            Send Combo_Add_Item "B"
            Send Combo_Add_Item "A"
            Send Combo_Add_Item "B"
        End_Procedure
    End_Object
    Object oButton is a Button
        Set Location to 15 0
        Procedure OnClick
            Send Combo_Delete_Item of oCombo 3 // it is supposed to have "ABA" left. However you will have "AAB" left instead.
        End_Procedure
    End_Object
End_Object

Start_UI
Frank Cheng