To reproduce:
1-login root on tty[1-6] on en_US installation
2-grub
3-find /boot/grub/stage1
4-keystroke <UP>

Actual behavior:
1-^[[A appears at prompt

Expected behavior:
1-find /boot/grub/stage1 appears at prompt

Comments:
1-Shell cmdline history works as expected in 13.1, as in all previous openSUSE
releases.
2-I recognized this problem many months ago, maybe as much as a year ago, but
only just surmised it was almost certainly 13.2 and up Grub Legacy
post-0.97-194.1.2 itself rather than having anything to do with kernel,
framebuffer configuration, video mode, or files contained in target
/boot/grub/. "Downgrading" to 13.1's 0.97-194.1.2 fixes 13.2 and Tumbleweed.
3-Nearly all my Grub stanzas include "splash=verbose vga=791 video=1024x768@60
3 " on cmdline.
4-All my openSUSE installations are on multiboot hardware (no VMs), with
keyboards on PS/2 ports.
5-Plymouth is not installed in any of my openSUSE installations.