Hello, Thanks a lot for the correction.
The 2.06-3~deb11u2 is now out for two weeks, but not available in Debian Stable. Any new XEN installation will not be functionnal since Sept-10 (publication of Debian 11.5). Rollback is paintfull. https://packages.debian.org/source/bullseye/grub2 -> 2.06-3~deb11u1 Will it be push into Bullseye? Or do we have to wait for 11.6?
