Hi Jonathan, hi Adam! Confirmed.
Moving "mount.bcachefs" out of the way fixes mounting via "fstab" and "mount" command. It also makes mounting work on boot with Devuan with Runit as init. Help output of "bcachefs" command from self-compiled bcachefs-tools 1.3.3 shows: Mount: mount Mount a filesystem This is missing from the help output of "bcachefs" command, version 1.3.4, from the package. Best, -- Martin