Simple List border?

The “Simple List” widget has no border and no border properties listed in the PI. Checking “the properties of widget …” shows the usual showBorder, borderWidth, and borderColor, but if I try a script:
set the showBorder of widget “hrCbCodelist” to true
set the borderWidth of widget “hrCbCodeList” to 1
set the borderColor of widget “hrCbCodeList” to black
the Simple List still does not display a border? Am I missing something (or amy I just practicing unacceptable poor UI design to want a border)? I realize I could put a rectangle graphic around it.