Thank you for the hint! Is this rom supposed to behave that way?
By the way I would like to report a bug found in the recovery. By default you can't get into the adb shell because of the unmounted /system. Once you mount it you can access the shell but there is no way to gain root privileges and typing "su" results in a creepy "Segmentation Fault". I don't know if this is due to the rom itself or the kernel (I suppose the latter).