Since the last Chrome extension upgrade it wouldn't fill in password on some sites that worked in the past. For example https://www.cal-online.co.il/ (log in by clicking the cyan button on the top left hand side).
Lastpass extension does recognize the site and shows the relevant passwords when I click the extension icon, but would not fill them in, only suggest to launch a new instance of the site and then again wouldn't fill the username or password.