Form Submitting even after there's validation error in Custom Regex validation

I had registration form where the validation message is being shown but I can still submit the form. it should prevent me from doing it.

<input type="password" name="password_confirmation" id="password_confirmation" 
  data-validation="required custom"
  data-validation-regexp="^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[~!@#$%^&*()_+])[A-Za-z\d~!@#$%^&*()_+]{6,}" 
  data-validation-error-msg-required="Password required"
  data-validation-error-msg-custom="Password must contain:<ul><li>Minimum 6 characters <li>At least 1 uppercase letter <li>At least 1 lowercase letter <li>At least 1 special character <li>At least 1 number</ul>">

Other validations are working like "Required or email" but custom validation is not functioning. Do I need to add some additional module to make this function.

victorjonsson / jQuery-Form-Validator

Form Submitting even after there's validation error in Custom Regex validation #709