dracut rootfs opt 'casesensitive' causing boot failure

[benwilks]

dracut -v -f --regenerate-all generates "dracut: stored kernel commandline:", "dracut: rootfstype=zfs rootflags=rw,noatime,xattr,posixacl,casesensitive"

Booting goes into emergency mode with the error:
Mounting /sysroot
filesystem rpool/ROOT/ubuntu cannot be mounted due to invalid option 'casesensitive'

It looks like the correct options are sensitive | insensitive | mixed. Any insight as to why this is happening and how I can override it?

Thank you!