Is Bazzite using an old ISO and causing a GRUB error?

The question is about grub not appearing when booting up Bazzite. Is that normal? Sometimes only a message appears saying Fedora 41 (ostree:0).

The Bazzite ISO on the website is an older version of Fedora. Is this normal or intentional?

Which ISO are you using currently? I remember some ISOs went obsolete recently. Apart from that, if you have layered packages, they might be preventing updates. Can you share the results of rpm-ostree statusin terminal?

We are currently on Fedora 43 so your system is indeed fairly old.