The user shouldn't be able to close the dash. dash should never be closed. And if for some reason dash crashes (and therefore gets estarted) that's an abnormal situation anyway, so it's expected that it doesn't look pretty.
Did you close the dash using the UI? ** Changed in: unity8 (Ubuntu) Status: New => Incomplete -- 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/1439615 Title: close all applications make the background become a black page Status in unity8 package in Ubuntu: Incomplete Bug description: when i close the dash, the background turns black before dash restart. and if the dash can't restart anymore, the background keep a black page until i open another application. release: ubuntu vivid vervet 15.04 unity8: 8.02+15.04.20150320-0ubuntu1 platform: desktop To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity8/+bug/1439615/+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