An invalid form control with name=field_paragraph

Hi
Can you help us understand your setup here as the material type and paragraphs aren't part of Drupal core
Can you confirm this happens with a core theme?
Can you provide steps to reproduce starting from install Drupal

Thanks!

I did some further testing and confirmed that this issue occurs only when using a custom theme. Switching to a core theme like Claro or Olivero eliminates the error, which suggests the problem might stem from hidden or visually collapsed required fields that become non-focusable.

The browser's native constraint validation throws the "invalid form control not focusable" error when a required field (like a select or text area) is hidden via CSS or not properly rendered in the DOM. One possible solution is to ensure that required fields remain focusable—either by avoiding hidden required inputs or by setting required dynamically via JS only when the field is visible.

I am removing excess tags according to the tag guidelines → .