The behavior of shim is WRONG and MUST be fixed; we've previously idenitfied that this affects not only cross-distro chainloading, it also impacts chainloading from the removable disk shim to \EFI\ubuntu\shimx64.efi via fallback.efi on non-TPM-enabled hardware. And per Julian, there has been acknowledgement from upstream that the behavior here needs to be fixed.
> shim-signed is won't fix.
No, it absolutely is not.
The behavior of shim is WRONG and MUST be fixed; we've previously idenitfied that this affects not only cross-distro chainloading, it also impacts chainloading from the removable disk shim to \EFI\ubuntu\ shimx64. efi via fallback.efi on non-TPM-enabled hardware. And per Julian, there has been acknowledgement from upstream that the behavior here needs to be fixed.