looks like bug #83847 which has been fixed since
** Changed in: ubuntulooks (Ubuntu)
Status: Confirmed = Fix Released
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Dapper 'human' theme does not maximize windows properly without top panel
https://bugs.launchpad.net/bugs/40197
You received this bug notification because you are a
This bug did not have a package associated with it, which is important
for ensuring that it gets looked at by the proper developers. You can
learn more about finding the right package at [WWW]
https://wiki.ubuntu.com/Bugs/FindRightPackage. I have classified this
bug as a bug in ubuntulooks.
**
