Not able to log on to Protonmail with latest NoScript

With the latest version of Tor browser (7.0.6 (based on Mozilla Firefox 52.4.0) (64-bit)) it is no longer possible to login to Protonmail. After entering the logon credentials and pressing the login button the process gets stuck with showing the rotating atom and the text decrypting. This happens both at their onion address and their regular address. I've set to allow javascripts globally and set the security slider to low. Didn't make any difference.