How to add order custom fields in this example?

[baermathias]

If I add custom elements to the hidden div like this (example from https://docs.snipcart.com/v3/setup/order-custom-fields):

<div
  hidden
  id="snipcart"
  data-api-key="my-key-here"
>
  <billing section="top">
    <fieldset class="snipcart-form__set">
      <div class="snipcart-form__field">
        <snipcart-label for="storeToPickUpFrom" class="snipcart__font--tiny">
          Store to pick-up from
        </snipcart-label>
        <snipcart-select name="storeToPickUpFrom" class="snipcart-form__select  snipcart__font--secondary snipcart__font--bold">
          <option value="1">One</option>
          <option value="2">Two</option>
          <option value="3"> Three</option>
          <option value="4">Four</option>
        </snipcart-select>
      </div>
    </fieldset>
  </billing>
</div>

I get errors:

Failed to resolve component: snipcart-label If this is a native custom element, make sure to exclude it from component resolution via compilerOptions.isCustomElement.
Failed to resolve component: snipcart-select If this is a native custom element, make sure to exclude it from component resolution via compilerOptions.isCustomElement.
Failed to resolve component: billing If this is a native custom element, make sure to exclude it from component resolution via compilerOptions.isCustomElement.

This can be solved by adding the tag names to isCustomElement:

vue: {
  compilerOptions: {
    isCustomElement: tag => ['snipcart-label', 'snipcart-select', 'billing'].includes(tag)
  }
},

But there is still this problem with billing:

Hydration node mismatch:
- Client vnode: billing 
- Server rendered DOM: <!---->  
  at <NuxtPage> 
  at <VMain> 
  at <VApp> 
  at <Default > 
  at <AsyncComponentWrapper > 
  at <BaseTransition mode="out-in" appear=false persisted=false  ... > 
  at <Transition name="layout" mode="out-in" > 
  at <Anonymous name="default" > 
  at <App key=1 > 
  at <NuxtRoot>

How could this be solved? @ludovic-armand
Here is a tiny reproduction of the problem: https://stackblitz.com/edit/github-rytvwm?file=layouts/default.vue