I've updated the bug summary to try reflect the outstanding issue AIUI, which is that the fix script from Robert isn't enough to make branches on Launchpad usable because the fix doesn't get propagated from from the hosted (writeable) copy to the mirrored (read-only) copy. If there's a separate bug tracking that already please feel free to link to it from this bug.
I've updated the bug summary to try reflect the outstanding issue AIUI, which is that the fix script from Robert isn't enough to make branches on Launchpad usable because the fix doesn't get propagated from from the hosted (writeable) copy to the mirrored (read-only) copy. If there's a separate bug tracking that already please feel free to link to it from this bug.