Comment # 14 on bug 1106673 from Thomas Blume

(In reply to Aender Boy from comment #12)
> removing `none` from `FONT_MAP=` in /etc/vconsole.conf and messing around
> with dracut and mkinitrd afterwards removed the error message, but either
> the luks pw prompt was still using english keyboard layouts or brought me to
> a rescue root shell after entering my luks pw, telling me about some issue
> with my keyboard(-layout?). 

Please attach the content of:

/etc/vconsole.conf

> https://en.opensuse.org/SDB:Encrypted_filesystems lists this bug as a known
> issue at the heading "international keyboard layouts"

That information is outdated.
The init script boot.crypto has been replaced by systemd-cryptsetup@.service in
Leap.