x/pkgsite: navigating to elements with anchors breaks depending on page width

[solodov]

What is the URL of the page with the issue?

I first noticed it with, https://pkg.go.dev/bufio#Scanner, but quick check shows the same behaviour with any module and any symbol.

What is your user agent?

Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/115.0.0.0 Safari/537.36

Screenshot

About 1000 pixels wide, opening the url shows content just below the anchor:

And a narrower window just goes to the top of the page:

What did you do?

just tried navigating to symbol documentation with narrow enough window. I think navigation starts to break down when window is narrow enough that left hand side menu is collapsed.

Incognito mode makes no difference.

What did you expect to see?

What did you see instead?

See the screenshots above.

[prattmic]

This sounds like a duplicate of #60347.