Puggo - Jar Jar's Yoda said:

I do consider the non-anamorphic format to be a bug. Why? Because industry standard at the time was to release widescreen movies anamorphically.

I have to point out that according to Lucas-logic, the GOUT is not actually the feature film on the 2006 DVDs, but a bonus feature, more akin to a deleted scene or making-of featurette. And those, I'm afraid, were not only occasionally non-anamorphic in 2006, but also showing timecodes, etc.

That said, aside from Lucas and a few sycophants, I doubt anyone on the GOUT production team believed the Lucas-logic. Certainly the advertising team believed the GOUT was the primary feature on the set.