Issues CMS 3.5.3500

I don’t do scans too often on the CMS interface but only when I update the app, recently i’ve updated to the last version and when I did a full scan it started very slow previous version wasn’t that slow. Also the notification while scanning disapears when I put the app on background and if I close the app it stops the scanning, my device is a S4 with kitkat 4.4.2. I’m gonna back to the previous version and see if this behaviour stills, later…

…well after rolled back to previous version I did a full scan and it started faster than last update, but if I close the app from background process the scan stop. It should keep the notification ongoing and also if I tap the notification it stop the scan.