Dropdown Single Select: Shows only selected item in dropdown, and there is no clear button to clear the drop down.

[ashishp-vmw]

Clarity v4:

If Dropdown has long list of items and one item is already selected, then it shows only selected item in Dropdown content. To see all the items in SingleSelect mode, user has user has to press "backspace" keys (or select entire text and delete) to clear the dropdown textbox and load the all the items in dropdown content.

Dropdown need to have clear button to set currently selected item, and load the dropdown content with all the items.