As the title says, no redirect happens when the OAuth prompt closes, reason probably is:
Refused to execute inline script because it violates the following Content Security Policy directive: "script-src 'self' 'unsafe-eval' open.scdn.co www.google-analytics.com cdn.ravenjs.com vt.myvisualiq.net www.gstatic.com". Either the 'unsafe-inline' keyword, a hash ('sha256-exNIbRoBufGA8Xw81IIBBDk1C1yh5NkucdznLehlx2g='), or a nonce ('nonce-...') is required to enable inline execution.
which is logged on google chrome console. Tried last chrome and one of the latest firefox developer, same kind of error, no adblock used.