There seems to be an issue with volto-form-block on plone.org

Installed version 3.0.1 (2023-02-06)
Latest release is 3.13.0 (2025-05-12)

When adding a new field of a type other than Text, it does not show up on the form itself.
Inspection of the element shows an empty div.

<div class="field"></div>

Pre-existing fields of other types (textarea, email, etc) still display correctly.
But their field type cannot be changed.
And new fields other than Text cannot be added.