This seems to be a regression from T372175: Allow tag labels and links to be translateable separately.

What we currently have is broken, it drops the #readview:

{
"tag-newcomer_task_read_view_suggestion": "Suggested: in read view",
"tag-newcomer_task_read_view_suggestion-helppage": "mw:Special:MyLanguage/Help:Growth/Tools/Newcomer_Tasks#readview"
}

What we previously had worked fine, it did indeed link the sub-section:

{
"tag-newcomer_task_read_view_suggestion": "[[mw:Special:MyLanguage/Help:Growth/Tools/Newcomer_Tasks#readview|Suggested: in read view]]"
}

Though we could also do the same that we do for many other links and use a full URL for an external link, that retains the #readview:

{
"tag-newcomer_task_read_view_suggestion": "Suggested: in read view",
"tag-newcomer_task_read_view_suggestion-helppage": "https://www.mediawiki.org/wiki/Special:MyLanguage/Help:Growth/Tools/Newcomer_Tasks#readview"
}

Still, this feels like an upstream bug and should ideally be fixed there, because interwiki links should work completely. cc @matmarex

That being said, we can do a quick-fix here on our side and use an external link instead, like we do for the other tags. Pinging @KStoller-WMF for deciding on the urgency and priority.

Change #1131396 had a related patch set uploaded (by Bartosz Dziewoński; author: Bartosz Dziewoński):

[mediawiki/core@master] Don't drop fragments in Skin::makeInternalOrExternalUrl()

https://gerrit.wikimedia.org/r/1131396

Thanks, @matmarex. I'm moving to the Growth sprint workboard so we can track and support code review and QA.

Change #1131396 merged by jenkins-bot:

[mediawiki/core@master] Don't drop fragments in Skin::makeInternalOrExternalUrl()

https://gerrit.wikimedia.org/r/1131396

In T389314#10680128, @matmarex wrote:

Feels like a bug to me too. Now that you've reminded me, I remembered that I ran into this problem myself when updating other tags: https://en.wikipedia.org/w/index.php?title=MediaWiki:Tag-discussiontools-newtopic&diff=prev&oldid=1260071196 but that was just one tag on one wiki, and I forgot about it.

Thank you!

The change has been merged, and I'm moving this to QA.