- Opt-in form builders can now add a Custom Field block from the editor palette to collect free-text answers into subscriber custom data.
- Custom fields can be set to multi-line so they render as a textarea on the form, with a hint showing how to preserve line breaks in email templates.
- Opt-in submissions now reject any custom_data value larger than 2KB with a clear per-field error.
- The opt-in form checkbox now has rounded corners that match the rest of the widget’s styling.
- The checkbox inspector now spells out exactly where the value is stored and what its default key is.
- Block inspector panels no longer duplicate the canvas preview, leaving the live canvas as the single source of preview.
- Updated dependencies including Rails to 8.1.3.