It only triggers if an element with that ID isn't present on the page, which #top isn't since it's not part of the default skin, so a fun part of this is that there's a lot of semi-broken links being generated by the enwiki default signature (and that gadget).

I wonder if the "right" fix here is to make Vector2022 have an <a id="top"> again...

e.g. https://en.wikipedia.org/wiki/User_talk:Aaron_Liu?dtenable=1&useskin=vector#top won't complain about this.

Change 1012754 had a related patch set uploaded (by DLynch; author: DLynch):

[mediawiki/skins/Vector@master] Add a #top anchor to Vector 2022

https://gerrit.wikimedia.org/r/1012754

Change #1012754 abandoned by DLynch:

[mediawiki/skins/Vector@master] Add a #top anchor to Vector 2022

Reason:

WHATWG spec has special treatment for #top, so actually it's the kids who are wrong.

https://gerrit.wikimedia.org/r/1012754

Change #1013331 had a related patch set uploaded (by DLynch; author: DLynch):

[mediawiki/extensions/DiscussionTools@master] Add #top to the ignore list for checking for moved topics

https://gerrit.wikimedia.org/r/1013331

Change #1013331 merged by jenkins-bot:

[mediawiki/extensions/DiscussionTools@master] Add #top to the ignore list for checking for moved topics

https://gerrit.wikimedia.org/r/1013331