Some updates. linux-image-6.0.0-2-amd64 6.0.6-2 does not fix the bug.
In the upstream bug, a new set of new patches were mentioned which should address this issue. I expect them to be merged into version 6.0.7. New patches regarding EFI: https://git.kernel.org/pub/scm/linux/kernel/git/efi/efi.git/log/?h=urgent I will not apply any patches manually but just wait for the coming releases instead. Anyone who has this issue right now can boot into kernel 5.19 as a workaround. Regards