showHintInField causing trouble in IE6

I am using smartGWT 2.2 and IE6.
If I create a combo box with the showHintInField property set to true, the combo box does not work anymore in IE6. When selecting a value from the list, instead of seeing the value as selected in the combo box, the display is reset to the hint.

 ComboBoxItem myBox = new ComboBoxItem("myBox");
 myBox.setType("comboBox");
 myBox.setShowTitle(false);
 myBox.setHint("My Hint");
 myBox.setShowHintInField(true);
 myBox.setValueMap(myValues);

Regards