In addition to #24, I had to set GRUB_FONT (not GRUB_FONT_PATH) to "/boot/grub/unicode.pf2" in /etc/default/grub.
In addition to #24, I had to set GRUB_FONT (not GRUB_FONT_PATH) to "/boot/ grub/unicode. pf2" in /etc/default/grub.