As fossfreedom says, if you login as a guest user, you'll have a completely fresh user account. If you can get the results there, then that means there is a bug somewhere in the software, most likely Compiz, and then you should report it. Otherwise, it's possible that there is a misconfiguration that causes it.
In order to file a good bug report, press Alt+F2 and enter
ubuntu-bug unity. You'll be asked if the bug you are reporting is a graphical one. Answer yes to that question so that information about your graphics card, driver, etc can also be appended.
Please make sure you've installed all upgrades and that you can still reproduce the problem before filing bugs.
From your screenshot, I'd say it's more than likely that the issue has to do with Compiz. But it is not impossible that it is a misconfiguration, so check with a guest account first.