Yes, this is a known issue. Harmy animated the Blu-ray footage to approximate the movement of the original footage, while maintaining the higher quality image, and it’s got issues.

In fact, Star Wars has the most-visible “warts” of all three Despecialized films, and Harmy has indicated it’s now his next priority for an updated release (when that will be is another question). It’s not just this issue… there are more to find once you go looking for them.

Presumably for the next version he’d be able to use 35mm footage for that scene, but that was not an option at the time he most recently despecialized it.