[BUG] Extension breaks sortable select values in backend.

[melcarthus]

What went wrong?
With the bolt-extension-formeditor installed I could not drag-drop the values inside the select in the backend of bolt.

After I uninstalled the bolt-extensions-formeditor I could drag and drop the values in the select field again.

reproduction

-Install bolt
-install boltforms
-install boltforms editor
-add field to your contenttype with a select like:

        tabselect:
            type: select
            values: tabs/title,id
            autocomplete: false
            multiple: true
            sortable: true
            keys: title

-Create a new page or other contenttype and fill the select with values. You will notice you can't drag and drop them anymore.

I got no errors in the console...

Bolt 3.3.6
Boltforms 4.1.12
Boltforms editor 4.0.2