FormField::addFieldset setHtmlAttribute does nothing

[evotodi]

When trying to add an html attribute to a filed set the attribute is not added. Symfony: 7.0 Easyadmin: 4.9.4 and 4.10.0

To Reproduce Add a fieldset with a html attribute using setHtmlAttribute

yield FormField::addFieldset('Static Network')->setHtmlAttribute('data-admin-vision-box-target', 'staticFieldSet')->addCssClass('evotodi');

Or using setFormTypeOptions

yield FormField::addFieldset('Static Network')->setFormTypeOptions(['attr' => ['data-admin-vision-box-target' => 'staticFieldSet']])->addCssClass('evotodi');

The addCssClass is there to easily find the fieldset and does work but does not effect the results.

Resulting html:

<div id="tab-networking" class="tab-pane field-form_tab active show" role="tabpanel" aria-labelledby="tablist-tab-networking">
  <div class="row">
    <div class="form-fieldset  field-form_fieldset evotodi">
      <fieldset>
        <div class="form-fieldset-header  ">
          <div class="form-fieldset-title">
            <span class="not-collapsible form-fieldset-title-content">Static Network</span>
         </div>
       </div>
       <div id="content-ea_form_fieldset_01HWDBH1GYEDD4CFM5Q3KB32Y7" class="form-fieldset-body   show">
         <div class="row">
             ...
         </div>
       </div>
     </fieldset>
   </div>
  </div>
</div>

Expected result:

...
<div class="form-fieldset  field-form_fieldset evotodi" data-admin-vision-box-target="staticFieldSet">
...

Adding a attribute to a tab does work as expected. What am I missing?