Special:AllMessages?filter=modified on the English Wikipedia
I can reproduce it in every Wikimedia site I can think of:
https://en.wikipedia.org/wiki/Special:AllMessages?filter=modified
https://www.wikidata.org/wiki/Special:AllMessages?filter=modified
https://el.wikiquote.org/wiki/Ειδικό:ΌλαΤαΜηνύματα?filter=modified
Version: unspecified
Severity: major
URL: https://en.wikipedia.org/w/api.php?action=query&meta=allmessages&amcustomised=modified
Attached: