> What do you mean by same behaviour, as in the same kernel is being loaded?
I mean the wrong kernel being loaded.
> How are you booting, bios or uefi? [...]
I am using an EFI system:
$ mount | grep boot
/dev/nvme0n1p1 on /boot/efi type vfat (rw,relatime,fmask=0077,dmask=0077,codepage=437,iocharset=ascii,shortname=mixed,utf8,errors=remount-ro)
However if I use fallback initramfs for linux-linux, I get linux-linux, not linux-zen.