I think before a2120b0bd0fed4dba09204f0bb2c4e477ac5b657 API list=imageusage returned the redirect pages themselves. Is it desired behaviour not returning the redirect pages?
Note that the link from the redirect page https://commons.wikimedia.org/w/index.php?title=File:Security_testfile.png&redirect=no is missing.
It is, however listed at https://commons.wikimedia.org/wiki/Special:WhatLinksHere/File:%27_onmouseover%3D%27alert%28%22There_is_a_security_vulnerable._Please_contact_the_next_admin_if_you_see_this_in_a_message_box.%22%29%27_target%3D%27.png
I am asking because I saw nothing at the API-announce mailing list.
Version: 1.23.0
Severity: normal