Comment 14 for bug 1413818

I'm quite sure it is not. It is a long standing bug that's been around for much longer than I wish. Gmail and Twitter are not native apps. SMS has nothing to do with it, as it's not using push notifications (which are responsible for causing the sound to be emitted). Telegram is a regular (though, pre-loaded) native confined click app, that uses push notifications the way other apps would (although besides a "Hello" example I don't know of a single other app making use of that yet, so it's hard to have a comparison). It's a system service responsible for making those sounds. Native apps other than system apps have not been allowed to play sounds with notifications, which eventually I saw was considered a bug. Please correct me if I'm wrong on why Gmail and Twitter actually work, but this bug is not of Telegram - feel free to tail -f .cache/upstart/ubuntu-push-client.log to see things like: http://paste.ubuntu.com/11772804/ - this should use a default sound.