ComboBox and FilteringSelect does not allow options with same value with different case to be selected onChange or onBlur

[vmanchal]

The FilteringSelect? widget does not allow the user to select the same value with different case whether it's onChange or OnBlur?. For example, if the options are values "value1", "VALUE1", "value2", "value3"...so on. After user selects "value1", if the user selects "VALUE1" from the dropdown list, the value reverts back to "value1" again. This happens on all browser and all platforms.

######## code snippet from dijit.form.ComboBox? widget ##############

_onBlur: function(){
    // summary: called magically when focus has shifted away from   this widget and it's dropdown
    this._hasFocus=false;
    this._hasBeenBlurred = true;
    this._hideResultList();
    this._arrowIdle();
    // if the user clicks away from the textbox OR tabs away, set the value to the textbox value
    // #4617: if value is now more choices or previous choices, revert the value
    var newvalue=this.getDisplayedValue();
    if(this._popupWidget&&    (newvalue==this._popupWidget._messages["previousMessage"]||newvalue==this._popupWidget._messages["nextMessage"])){
				    this.setValue(this._lastValueReported, true);
    }else{
	this.setDisplayedValue(newvalue);
    }
},

########################################

If the else part is commented, everything works fine as expected.

[vmanchal]

To be clear, the value selected on the onChange event is correct. It updates the textbox with the correct value. The problem is with onBlur on the textbox. It is onBlur, it reverts back to the previous value.