Keyboard shortcuts - can no longer use function keys

I used to be able to set the keyboard shortcut to launch Quick Access to an 'extended' function key (F13-F19), however when I try this, it doesn't allow it anymore. I think this is an issue with 1Password as I am able to use them to launch other applications and it always worked with v7. Has this feature been removed or am I doing something wrong?! I've checked both in 1Password preferences, the browser extension and macOS settings but cannot get it to work at all.

1Password Version: 80800126
Extension Version: 2.3.5
OS Version: macOS 12.4