LastPass app autofill is not working in the new Edge Preview as it does in Firefox, Chrome, Opera, etc. In other browsers, the App Fill service recognizes these other apps as browsers and offers login autofill for currently-displayed websites. However, in the new Edge Preview, the app is simply recognized as a Microsoft app and thus LastPass autofill only offers/suggests Microsoft account logins. It seems that this is the case because the Edge Preview is not recognized by LastPass as being a web browser.