After creating T15864, I received a notification email whose subject line is
[Maniphest] [Updated] T15864: PHP 8.1 "strlen(null)" exceptions in PhabricatorEditEngine handling empty comment data in AphrontRequest.
The first line in the email body correctly says aklapper created this task.
This is a regression: It should have said [Created] instead of [Updated].
This had worked correctly in the past, on 2026-06-19,
[Maniphest] [Created] T15860: Editing a Herald rule fails to display values of custom field: "Unknown Object (????)"
was still correct.
The only recent change coming to my mind is rPf4d9d6920bcdcafedd6a05f34c28642589b3c285, might be unrelated...