formState.disabled = true has no effect

[tadeussenf]

Setting formState.disabled to true should disable all input fields in the form. When using angular-formly-templates-material this setting has no effect tough:

    vm.options = {
      formState: {
        disabled: true
      }
    };

All input field stay enabled.
See http://jsbin.com/yatewi/edit?html,js,output