[unity8] if an app crashes or you kill it the launcher menu still shows instances that don't exist anymore and if you click on it crashes unity8

[dinamic]

ubuntu 17.04 unity8

[unity8] if an app crashes or you kill it the launcher menu still shows instances that don't exist anymore and if you click on it crashes unity8

first i notices with tupi (qt5 app), when you save the project tupi crashes but it leaves behind in the app launcher menu the current state even though the app is not running anymore. you don't need to test with tupi you can just test with a random app (terminix), open new windows and then "pkill -9 terminix". clicking on the old stuff in launcher menu (right click on terminix) click, crashes unity8

see screenshots

[dinamic (dinamic6661)]

this crash https://bugs.launchpad.net/ubuntu/+source/unity8/+bug/1676288