Not a compiz bug and actually not related to bug 1012956. As Cimi mentions, the problem persists even with the decor plugin unloaded. And decor is what paints compiz shadows. So this is a Unity-only rendering issue.
andyrock says:
"They're not shadows. The problem is that the panel and the launcher are now rendered in the fbo. This fbo will be used to get the blurred area"."
Not a compiz bug and actually not related to bug 1012956. As Cimi mentions, the problem persists even with the decor plugin unloaded. And decor is what paints compiz shadows. So this is a Unity-only rendering issue.
andyrock says:
"They're not shadows. The problem is that the panel and the launcher are now rendered in the fbo. This fbo will be used to get the blurred area"."