Can't create a link to the current page or to one of its sections from the BlockNote link modal

Steps to reproduce

1. Edit a page with the BlockNote editor.
2. Select a word, then click the link button of the formatting toolbar (or type /link in an empty paragraph).
3. Leave the link type to "Page" and the page reference empty, expand the "Options" section and set the anchor of a section of the current page, e.g. HSection.
4. Submit the link modal.

Actual result

Nothing happens: no link is created. When a display text is typed, a link is created, but it's not saved as a link to the current page.

Expected result

A link to the section of the current page is created, and saved with an empty reference, as XWiki Rendering supports it: [[label>>||anchor="HSection"]]. Likewise, a link with an empty page reference and no anchor nor query string should link to the current page: [[label>>]]. Editing such a link should keep its page reference empty.