The bug description here is all wrong. grub-efi-amd64-signed depends on grub-pc | grub-efi-amd64; you never have grub-efi-amd64-signed without one of these. The regression is because grub-efi-amd64 from grub2-unsigned has dropped the conffiles, expecting them to be provided by the grub2-common which it depends on; but we still have the old grub2-common from grub2 source which does not ship these conffiles.
We must either have grub-efi-amd64 reintroduce the conffiles in stable series, or add them to grub2-common.
The bug description here is all wrong. grub-efi- amd64-signed depends on grub-pc | grub-efi-amd64; you never have grub-efi- amd64-signed without one of these. The regression is because grub-efi-amd64 from grub2-unsigned has dropped the conffiles, expecting them to be provided by the grub2-common which it depends on; but we still have the old grub2-common from grub2 source which does not ship these conffiles.
We must either have grub-efi-amd64 reintroduce the conffiles in stable series, or add them to grub2-common.