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On Lion I used to see the next space wallpaper while pressing Control + to switch desktops. But on Mountain Lion I see a Black Screen until the transition is complete. Is it just me who is facing this issue or is this the new behaviour in Mountain Lion?

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That's not the intended behavior. Does it happen on other accounts or a guest account? – user495470 Aug 27 '12 at 11:18
This is currently happening on my main admin account. I will try creating other account and report back in a minute :) – Gamer Aug 27 '12 at 15:04
Happened to me in OSX El Capitan. The cause was 'Console'. Closed it and the black screen vanished. – Ben Oct 26 '15 at 20:17

Its now resolved. It was not an issue with OSX. I was using a software called ScreenShade which was causing this issue. Disabling ScreenShade resolved the issue.

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same thing happens with Isolator ( – whaley Sep 19 '12 at 14:30

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