[Vue warn]: Component inside <Transition> renders non-element root node that cannot be animated.

[Vue warn]: Component inside <Transition> renders non-element root node that cannot be animated. 
  at <Teleport disabled=false forceMount=true to=undefined > 
  at <ComboboxPortal forceMount="" > 
  at <BaseTransition appear=false persisted=false mode=undefined  ... > 
  at <Transition name="fade" > 
  at <Primitive ref=fn<s> style= 
Object { pointerEvents: undefined }
 as=undefined  ... > 
  at <PopperRoot class="w-[200px]" > 
  at <ComboboxRoot modelValue="" onUpdate:modelValue=fn class="w-[200px]" > 
  at <Combobox modelValue="" onUpdate:modelValue=fn options= 
Array(3) [ "Option 1", "Option 2", "Option 3" ]
  ... > 
  at <App key=3 > 
  at <NuxtRoot>

<ComboboxRoot>
  <ComboboxAnchor>
    <ComboboxTrigger>
      ...
    </ComboboxTrigger>
  </ComboboxAnchor>
    
  <Transition name="fade">
    <ComboboxPortal forceMount>
      <ComboboxContent position="popper">
    <ComboboxViewport>
      <div>
        <ComboboxInput />
      </div>
    <ComboboxGroup>
      <ComboboxItem>
        <span>...</span>
        <ComboboxItemIndicator>
            </ComboboxItemIndicator>
          </ComboboxItem>
        </ComboboxGroup>

        <ComboboxEmpty />
        </ComboboxViewport>
      </ComboboxContent>
    </ComboboxPortal>
  </Transition>
</ComboboxRoot>