[Bug Report] v-edit-dialog missing buttons

[nonprofitnerd]

Environment

Vuetify Version: 2.2.11
Last working version: 2.2.8
Vue Version: 2.6.11
Browsers: Chrome 75.0.3770.142
OS: Linux x86_64

Steps to reproduce

  <v-edit-dialog 
    :return-value.sync="xx"
     large
     cancel-text="txtCancel"
     save-text="txtSave"
     @save="hello(item)"
    >
      {{ xx }}
      <template v-slot:input>
        <v-text-field
          v-model="xx"
          class="mt-5 pt-0"
         />
       </template>
    </v-edit-dialog>

Expected Behavior

'Save' and 'Cancel' buttons should shown

Actual Behavior

...

Reproduction Link

https://codepen.io/eatalay/pen/MWwwWKm

[jacekkarczmarczyk]

Duplicate of #10522