Old database backups are not deleted automatically
After upgrade to 3.2, the automatic deletion of DB backups has stopped. Web backups are deleted correctly.
Found on page 2 of a forum thread: https://www.howtoforge.com/community/threads/i-get-some-errors-after-upgrading-to-ispconfig-3-2.85384/page-2
Page 1 describes a different issue where we have not found what's the problem yet.