There is a regression in plymouth. No fix other than downgrade yet.
I have deleted ‘plymouth’ from my HOOKS line in /etc/mkinitcpio.conf
and
then did a mkinitcpio -P
Kudos to @fonic
https://forum.manjaro.org/t/boot-keymap-changed-to-us-password-error-following-stable-update-2026-06-26/188603/8