Quoting in Gmail - keyboard shortcut doesn't work

Hi all. I regularly use the “Quote” functionality in Gmail, where I select the text and hit CTRL-SHIFT-9 - at least in Windows Chrome.

But for some reason Bitwarden disables this. Nothing happens when I hit these keys. Any idea of a workaround? And why is Bitwarden blocking this when it doesn’t appear to use it for anything?

TIA.