[Bug 77415] Re: Screen not properly redrawn on desktop change, if a system dialog is shown

[Noirin Plunkett]

This was not using a xinerama setup - it was on a single laptop, with
only the normal screen/display.

The screen was not locked - the example in the screenshots shows a power
dialog, but any system dialog which darkens the background when it
appears (eg password dialog to access administrative functions) has the
same effect. I switched to another desktop using ctrl-alt-F8 etc.

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 Screen not properly redrawn on desktop change, if a system dialog is shown
https://launchpad.net/bugs/77415