Allow in-page link to headings in shared docs

We want to be able to link to headings inside a page and that they worked on a shared page. But if we add a link only with the #link_to_heading:

<img width="878" alt="CleanShot 2021-10-08 at 11 56 10@2x" src="

when viewing the shared public page and clicking on one of this links you get to a blank screen, while the desired behaviour would be a scroll-to to the corresponding header.

The link seems correctly added (example: )

<img width="1368" alt="CleanShot 2021-10-08 at 13 24 21@2x" src="