I managed to recreate, in fact it happens everytime. I think it is an indicator-sound issue, as I can see the following difference in the indicator before and after the call:
BEFORE: dict entry( string "icon" variant struct { string "themed" variant array [ string "audio-volume-high-panel" string "audio-volume-high" string "audio-volume" string "audio" ] } ) AFTER: dict entry( string "icon" variant struct { string "themed" variant array [ string "" ] } ) The themed icon looks incorrect. Investigating it... ** Changed in: indicator-sound (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to unity8 in Ubuntu. https://bugs.launchpad.net/bugs/1555831 Title: Miss call removes the sound icon in the notification bar Status in Canonical System Image: Confirmed Status in indicator-sound package in Ubuntu: Confirmed Status in unity8 package in Ubuntu: Confirmed Bug description: phone: Mako channel rc-proposed 15.04 r.258 When i get a miss call i can see that the sound icon has disappeared in the notification area. The way to get it back is triggering a volume change. You can also notice the icon is disappearing when the notification is shown for the call if you do not take the call the icon will not show up until you mess around with a volume change. If you take the call the icon will come back. To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1555831/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp