Comment 4 for bug 1953744

Yes, I think the removal of patches/debian/Keep-journal-files-compatible-with-older-versions.patch in https://salsa.debian.org/systemd-team/systemd/-/commit/7ce044098c120b25cd3a5a0f3173fb446ad71873 is to blame for this.

We could see about getting that patch reinstated, or we could configure systemd-journald to run with SYSTEMD_JOURNAL_KEYED_HASH=0 in the live session...