Bummer that its not usable on the browser extension though. I used to have the desktop app but it ended up being mostly useless. 99% of my passwords go into the browser where I want autofill, and for the rest I almost always have a browser open anyways so I can just as easily copy/paste from the extension as the app.
You can use biometrics in the browser app, but you have to run the application and unlock that with biometrics after enabling browser integration in the settings. You also can't use the Windows Store version of the Bitwarden app.