Disabled Button Still Working

[ghost]

Hi, I think there is a bug in the button options property. When I write

 'buttons' => [
                    'next' => [
                        'title' => 'Next',
                        'options' => [
                            'class' => 'btn btn-primary disabled'
                        ],
                    ],
                ],

cursor style for that button is like cursor: not-allowed;
but when it clicked, it still can move to the next step. Consider add $(".btn.disabled").off('click'); or something in the script file.
Also, for furthur development, I suggest to

• add 'validate' property or some thing when button next or save is clicked for validate in client side before go to the next step
• add disable click function on the tab/icon it self, because wizard suppose to do something in sequence

by the way, its good to know this extension. Help me alot!