Bug in Checkbox when changed "allowEmptyValue"?

[Ozi]

Hi Isomorphic,

I'd like to ask - is it allowed/supported to change the CheckboxItem property "allowEmptyValue" when the item is already created?
I would like to have the checkbox, which can change it's behavior from 3 state to "native" 2 state on the fly.
Like in the following simple example, it seems the tested checkbox changes it's style, when the "allowEmptyValue = false" is set. But still has the 3 states...

isc.DynamicForm.create({
    width: 300,
    fields: [
        {name: "testSwitcher",
         type: "checkbox",
         value: true,
         title: "Allow empty value for 'TestCheckbox'",
         changed: "form.getField('testCheckbox').allowEmptyValue = value"
        },
        {name: "testCheckbox",
         type: "checkbox",
         allowEmptyValue: true,
         redrawOnChange: true,
         title: "TestCheckbox", 
         changed: "this.title = 'TestCheckbox ['+value+']'"
        }
    ]
});

Any hint is appreciated.

SmartClient Version: v10.0p_2015-04-09/LGPL Development Only (built 2015-04-09)