Yes, I've seen that image before; and admittedly, it is embarrassingly bad. But let me ask you this: Did you notice this error while watching AOTC in motion? I surely didn't, and it's important to remember that no film was ever designed to be watched frame-by-frame.
Also, as I said before, "the random [CG] error here or there is probably unavoidable in such a big-budget series" just by virtue of how many CG shots must be churned out in a relatively limited timeframe. Now I'm not saying that movies should be 90% CG; only that in a movie that is, we should expect and forgive a bad shot or two, especially if it's only noticeable when watching frame-by-frame.