quasar: Dialog component no longer able to close and also buttons miss-functioning since upgrading to 0.14.6

Software version: Quasar: 0.14.6 OS: Windows 10 Node: 8.6.0 NPM: 5.4.2 Browsers: Chrome & FireFox iOS: Android: Material theme

Issue with Dialog box since upgrading to 0.14.6 The following code stopped working since upgrading (worked fine on previous versions). When trying to click button 1 the console logs the click but fails to close the dialog. When clicking button 2 nothing happens - seems the handler isn’t called. Also - clicking outside the dialog or using the ESC key no longer closes the Dialog.

Here’s my test.vue component:

 <template>
 <div>
    Test area
</div>
</template>

<script>
    import {
       QBtn,
       QIcon,
       QModal,
       Dialog
   } from 'quasar-framework'

    export default {
       name: 'Test',
       components: {
        QBtn,
        QIcon,
        QModal
       },
       data()  {
           return {}
       },
       computed: {
       },
       methods: {
           testDialog() {
                var that = this;
                let tmpDialog = Dialog.create({
                    title: 'Test Dialog',
                    noBackdropDismiss: false,
                    buttons: [
                    {
                        label: 'Button 1',
                        preventClose: true,
                        handler(data, closeThis) {
                            console.log("Button 1 clicked");
                            closeThis();
                         }
                    },
                    {
                        label: 'Button 2',
                        handler(data) {
                            console.log("Button 2 clicked");
                        }
                    }
                    ]
               });
           },
       },
       mounted () {
           this.testDialog();
       },
       nextTick() {},
       updated () {}
   }
</script>