label slot for children nodes not working about vuetify-draggable-treeview HOT 5 CLOSED

 <VuetifyDraggableTreeview v-model="items">
     <template v-slot:label="{item}">{{item.name}} [TEST]</template>
</VuetifyDraggableTreeview>

      <draggable
        :group="group"
        :value="value.children"
        ghost-class="ghost"
        @input="updateValue"
      >
        <treeview-node
          v-for="child in value.children"
          :key="child.id"
          :group="group"
          :value="child"
          :level="level + 1"
          @input="updateChildValue"
        >
          <template v-slot:prepend="{ item, open }">
            <slot name="prepend" v-bind="{ item, open }" />
          </template>
          <template v-slot:append="{ item }">
            <slot name="append" v-bind="{ item }" />
          </template>
        </treeview-node>
      </draggable>

      <draggable :group="group" :value="value.children" ghost-class="ghost" @input="updateValue">
        <treeview-node
          v-for="child in value.children"
          :key="child.id"
          :group="group"
          :value="child"
          :level="level + 1"
          @input="updateChildValue"
        >
          <template v-slot:prepend="{ item, open }">
            <slot name="prepend" v-bind="{ item, open }" />
          </template>
          <template v-slot:label="{ item, open }">
            <slot name="label" v-bind="{ item, open }"></slot>
          </template>
          <template v-slot:append="{ item }">
            <slot name="append" v-bind="{ item }" />
          </template>
        </treeview-node>
      </draggable>