The bug is actually in lp:unity-notifications. The more-than-one-notification-per-app-in-queue guard does not work and that's causing this issue. I'm currently working on fixing this in lp:unity-notifications.
The bug is actually in lp:unity-notifications. The more-than- one-notificatio n-per-app- in-queue guard does not work and that's causing this issue. I'm currently working on fixing this in lp:unity-notifications.