After installation of Avast Mobile Security on my Samsung Galaxy S3 (GT-I9300, Android 4.1.2 - I9300XXEMG4). I encountered the problem that even in Silent Mode all the notification sounds (email reception, Hangout messages, etc.) were played. First I thought of a problem with EasyProfiles I use to change settings fast and based on rules. I therefore uninstalled EasyProfiles. But this didn't have any effect on the phone's behavior concerning the playing of notifications sounds.
Just after unstallation of Avast the phone went back to its normal behavior of not playing notification sound when set to mute or vibrate.
Unfortunately because if this strange behavior Avast is at the moment a no-go as I don't want to be woken up at night (when the phone is in silent mode) every time a message arrives.
Is this a know issue? And if so, is there a solution in sight?