Steps to replicate the issue (include links if applicable):

• create a redirect to a special page, e.g. redirect [[SP:SP]] as a shortcut to [[Special:SpecialPages]].
• click on the redirect

What happens?:

The redirect works, but doesn't display [[Mediawiki:Redirectfrom]]

What should have happened instead?:

It should display [[Mediawiki:Redirectfrom]] below the page title, like other redirects.

Software version (skip for WMF-hosted wikis like Wikipedia):

1.35 but presumably later as well.

Other information (browser name/version, screenshots, etc.):

Try it yourself.