Machine name JS does not work in Page Data/Component Instance form

🤔 Which field type's widget uses this?

AFAICT this is about \Drupal\Core\Render\Element\MachineName, which is a FormElement plugin, not a FieldWidget plugin.

Per #2, unless I'm wrong, this would be the appropriate issue queue component. 🤓

Unfortunately we hit this right away when integrating webform with XB. As explained in the issue summary entering the machine name in the block prop works, but not the autocomplete. Unfortunately it is loaded back as a Title (machine_name) so when/if you edit it you need to remember to edit it back to machine name only.

I opened 🐛 Autocomplete machine name handling does not match to machine name Active for that but is a duplicate.

Ben tells me this is a different issue, so reverted to what it had before I took it over, so this problem is still being tracked. Adding back the reference though to make sure that is not forgotten.