If I take a look at /boot/grub/grub.cfg I see the lines:
function recordfail {
set recordfail=1
# GRUB lacks write support for btrfs, so recordfail support is disabled.
}
So, I guess this is intentional, at least.
Are you booting via UEFI or BIOS?
I could at least reduced the timeout by setting GRUB_RECORDFAIL_TIMEOUT.
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https://bugs.launchpad.net/bugs/1964719
Title:
GRUB shows up by default, even though GRUB_TIMEOUT=0
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