No option to specify drive where bootloader is installed

[drws]

What Happened?

I'm trying to install Elementary OS to a bit unusual drive/partition layout and I need to be able to select the device to which the bootloader is installed. This is a standard feature in other installers.

Steps to Reproduce

1. Boot Elementary OS ISO and start installing
2. When partition layout is configured (last step), try to convince the installer to install the bootleoader somewhere else other than the drive where the root partition is.

Expected Behavior

One should be able to select the device to which the bootloader is installed.

OS Version

6.x (Odin)

Software Version

Latest release (I have run all updates)

Log Output

No response

Hardware Info

I have two drives: /dev/sda and /dev/sdb. I would like to install Elementary OS's root to /dev/sda while I would like to install its bootloader to /dev/sdb. This is possible in other distros' GUI installers.