Publication rename removes anchors in backlinks

1. Create a book, library, and all config.
2. Create a page 1 with some content and a header "Anchor'
3. Create a second page 2 with some content. Add in the content an anchor
E.g.:

[[anchor>>||anchor="HAnchor"]]

or

 [[page 1>>doc:page1.WebHome||anchor="HAnchor"]]

4. Publish the pages
5. Go to the publication pages and check the links

Expected results:
1. The first link takes you to the header on the page
2. The second link takes you header on the other page

Actual results:
The links are updated by the rename to the publishing location (backlinks). But the anchors are lost.

[[anchor >>doc:xwiki:publishingSpace.page2.WebHome]]
[[page 1>>doc:xwiki:publishingSpace.page1.WebHome]]