Grub customizer doesn't apply changes

[Dawid]

I have installed Ubuntu 21.10 on encrypted ZFS and on second disk Windows 10 with Bitlocker.
When I'm using grub customizer and set "Boot default entry after" to 10s and click save button there is no any error. However when I restart PC then GRUB still shows menu for 30s not 10s. And when I open grub-customizer again it shows "Boot default entry after" with value 10s.

[Daniel Richter (danielrichter2007)]

Seems to be a special logic "recordfail" which is used for encrypted hard drives. Currently, this is not handled by grub customizer automatically, but you can set this timeout by clicking the "advanced settings" button and adding a new option GRUB_RECORDFAIL_TIMEOUT with value 10.

[Dawid (dawidkrok)]

Unfortunately, when I added in "advanced settings" a new option GRUB_RECORDFAIL_TIMEOUT with value 10 it didn't help

[Daniel Richter (danielrichter2007)]

Hmm... could you check the file /boot/grub/grub.cfg for a setting with value 30?

[Dawid (dawidkrok)]

In such file no any settings with value 30. Is it possible that grub customizer didn't set this GRUB_RECORDFAIL_TIMEOUT to 10?