I looked through the regression log and the "issue" is due to https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1831789 which added the dis_ucode_ldr flag to GRUB recovery options. This just triggered an obvious change from the expected lines which did not have that option.
I tested v2.04-1ubuntu26.4 of grub-common, grub-pc-bin, grub-pc, and grub2-common and can confirm that "dpkg-reconfigure grub-pc" now prompts for the destination hard drives. I also received the same number of "Installing for i386-pc platform" message as the number of hard drives I selected. I think it's fixed!
I looked through the regression log and the "issue" is due to https:/ /bugs.launchpad .net/ubuntu/ +source/ grub2/+ bug/1831789 which added the dis_ucode_ldr flag to GRUB recovery options. This just triggered an obvious change from the expected lines which did not have that option.
I tested v2.04-1ubuntu26.4 of grub-common, grub-pc-bin, grub-pc, and grub2-common and can confirm that "dpkg-reconfigure grub-pc" now prompts for the destination hard drives. I also received the same number of "Installing for i386-pc platform" message as the number of hard drives I selected. I think it's fixed!