Readability strips out too much HTML, breaking anchor links

The URL in question: https://practicaltypography.com/are-two-spaces-better-than-one.html

The source HTML looks like this:

<p>
    ...
    <a href="#update-august-2022">
        2022 up­date
        ::after
    </a>
    ...
</p>
...
<div class="subhead" id="update-august-2022">
    <a href="#update-august-2022">Update, August 2022</a>
</div>

After Readability it looks like this:

<p>
    ...
    <a class="no-href" href="#update-august-2022">
         2022 up­date
    </a>
    ...
</p>
...

i.e. the anchor link destination has been stripped out and so the href no longer works.

Start by running the provided practicaltypography.com URL through Readability and comparing the source and processed HTML around the anchor and its target. Trace the handling of same-page links, then verify that the processed anchor retains a working href to the existing update-august-2022 destination.