Important: #83971 - Browser Notification API only works on SSL encrypted connections
See forge#83971
Description
Google Chrome has deprecated the JavaScript Notification API for unencrypted connections, which triggers warnings. Due to this TYPO3 does not use the LoginRefresh notification here anymore.
See https://goo.gl/rStTGz for more details.
Impact
The browser notifications for expired login only works on HTTPS.
Affected Installations
Any installation which does not use HTTPS.
Migration
Use SSL / HTTPS for the installation and the Notification API will work just like before.