Nick's latest comment at the old https://bugzilla.wikimedia.org/show_bug.cgi?id=57512#c32 {T59512}
From testing in this Topic: https://www.mediawiki.org/w/index.php?title=Talk:Sandbox&workflow=rylnpvcpshj9n30s
New(?) bug 68343 ({T70343{): It appears that the Special:WhatLinksHere table isn't getting updated until I reply to, or edit, a post.
I.e. If I link or transclude [[mw:template:test1234]], then it will not appear in [[mw:Special:WhatLinksHere/Template:Test1234]], until I reply to, or edit, the post that contains it.
(Or, possibly it will automatically update after a delay, but it didn't within my 15 minute pause-test)
See also https://trello.com/c/5rVhGp7h/
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**Trello card**: [[ https://trello.com/c/FdlVgahQ/476-make-whatlinkshere-work-for-topic-pages-pics-and-templates-bugs-57512-68343 | FdlVgahQ ]]
* column: Send to Phabricator - Collaboration-Team board