The runtime asked the assignments stream's root for the last message by subject in the body, and the
mesh grants a module's account only the subject-addressed form of the direct get — the server refused
every read (Publish Violation on $JS.API.DIRECT.GET.ASSIGNMENTS for every module on the new runtime),
so every runtime kept the derived shape. The address is now the stream then the subject, nothing in the
body, which is the one address the account has.