Comment # 4 on bug 990701 from andreas bittner

I have found some more, my /etc/default/

-rw-r--r--   1 root root  1757 Oct 28  2015 grub

is from october 2015 and it has

GRUB_DEFAULT=saved

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# Modified by YaST2. Last modification on Thu Oct 15 20:06:34 CEST 2015
# THIS FILE WILL BE PARTIALLY OVERWRITTEN by perl-Bootloader
# For the new kernel it try to figure out old parameters. In case we are not
able to recognize it (e.g. change of flavor or strange install order ) it it
use as fallback installation parameters from /etc/sysconfig/bootloader

# If you change this file, run 'grub2-mkconfig -o /boot/grub2/grub.cfg'
afterwards to update
# /boot/grub2/grub.cfg.
GRUB_DISTRIBUTOR=
GRUB_DEFAULT=saved
....
....
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