Eager to install the latest build of the desktop version I skimmed through the change log and only noticed the added keyboard shortcut.
If I remember it correctly it's supposed to be Ctrl+Alt+\ but it doesn't seem to work for me. I have a Swedish keyboard layout if that somehow causes any issues. I've tried Ctrl+Alt+every-other-possible-key, both in a web browser (Firefox) and in the OS, without any luck.
1Password Version: 6.0.178d
Extension Version: 4.5.7
OS Version: Windows 10
Sync Type: Families