Description

When testing the Breadcrumbs block, leaving the Separator field empty in the block settings does not display any visible separator between breadcrumb items in the front end and in the editor.

There’s also no validation message or fallback behaviour, and the field accepts an empty value without error or defaulting to the expected / (slash) or another symbol.

Step-by-step reproduction instructions

1. Insert a Breadcrumbs block in a Page or Page template.
2. In the block settings sidebar, clear the Separator field (leave it blank).
3. Save the Page or Page template.
4. View the editor and the frontend output.
5. Observe the absence of a separator.

Screenshots, screen recording, code snippet

Environment info

No response

Please confirm that you have searched existing issues in the repo.

• Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

• Yes

Please confirm which theme type you used for testing.

• Block
• Classic
• Hybrid (e.g. classic with theme.json)
• Not sure