Feature summary:
Make the banner above old revision that says "This is an old revision of this page, as edited by .... The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision." a position: sticky element.

Use case(s):

So it can be seen no matter scroll position or when a section link (hash address) is shared

Benefits:

When an old revision is shared with a hash address, that banner is skipped for the reader and it's harder for people to understand that link belongs to an old revision of the page.

For example at https://en.wikipedia.org/w/index.php?title=Comparison_of_file_systems&oldid=209082662#Features that banner at the top of is hard to reach and read and people may think that's the most recent version.

The reason for this, https://x.com/swiftonsecurity/status/1793536427889967595 the tweet has a link (from a revision that is now deleted) with a hash address and some people were thinking that's really what this page has right now and couldn't read the banner. Also having that banner as position: sticky may help https://en.wikipedia.org/wiki/Banner_blindness (and may not!)

Sure the change isn't as simple as just applying a style, position: sticky, I just wanted to say what I imagine as the base of a possible fix for it and probably UX designers might have much better ideas.