Comment 45 for bug 1158161

This bug is about unmaximized windows having click-trough decorations. If you really see click-trough decorations on unmaximized or user-maximized windows, this bug is not fixed. I have personally tested this with both trunk and raring version of compiz and this bug does not exist there, with or without Unity.

Now, then there's bug 1158267. If the following points apply, that's the bug you're seeing:
1) You use a non-Unity session
2) The application with click-trough decorations is _started_ maximized ("started" is is the important part here)

That's a corner case with a fix available in lp:~mar-kolya/compiz/fix-for-1158267. However, that fix is currently blocked on lack of proper test suite for the decor plugin. Once the decor has a test suite in place (bug 1188900), we can be more certain that the fix doesn't cause new regressions and it's ready to go in.