Page break block links not displaying in Full Site Editing themes despite functioning in non-FSE themes.
The issue involves the Page Break block not displaying navigation links in Full Site Editing themes, though it works in traditional themes. A PR exists with a proposed fix, and maintainers have indicated it's a regression needing attention. No major blockers are present beyond review and merge of the existing PR.
Using a Full Site Editing theme such as TT1-blocks
Ability to view the individual pages by clicking on the links.
Pages: 1 2 3 4 5
There should be links for the pages which aren't the current page, with each link containing the page number of the page to view. https://blocks.wp-a2z.org/block/page-break-core-nextpage/2/
n+1 pages where n = number of page break blocks used.
The Pages: links do not appear.
It is possible to navigate to the other pages. But there are no visual clues.

Expected results. Unchanged from how it works for a non-full site editing theme.

Claim this issue to let others know you're working on it. You'll earn 10 points when you complete it!