iso doesn't boot on 2.0

Hi all,

during a desaster recovery test run I noticed that the acronis rescue boot iso does not boot up.
It is needed to play backups back into the vm so it is vital that this works. In an old environment running ProxMox 1.9 it boots up propperly.
In 2.2 it starts the acronis boot loader then stops with one core at 100%.

Has anyone had something similar?

Regards, Holger