"Show 1Password" - some hotkeys don't work on Windows, en-gb keyboard

When I installed 1Password 8 for Windows, I set the the hotkey to show 1Password to be Ctrl Shift \ -- this didn't work at all.
I tried changing it to Ctrl Shift <backtick>, Ctrl Alt <backtick>, Ctrl Alt #, Ctrl Alt ' etc -- none of these worked.

However Ctrl Alt 1 and Ctrl Shift 1 did work.

I'm using 1Password 8.5.0 ("Version: 80500121, on PRODUCTION channel") on a fully up-to-date Windows 10 on a https://en.wikipedia.org/wiki/British_and_American_keyboards#/media/File:KB_United_Kingdom.svg.

Please could you fix this so we can use Ctrl Shift \ or Ctrl Shift <backtick> as a shortcut to show 1Password?

Thank you!

1Password Version: 8.5.0
Extension Version: Not Provided
OS Version: Windows 10