When seen on his spy's view-screen, Zatec-Cha has a purple scarf around his face, yet his face is clearly visible when seen in person later on.
When C-3PO bumps into the pirate Jyn Obah outside Kybo Ren's cell, part of his chest-plate (which is stolen Stormtrooper armor) turns the same dark color as his cloak.
During the end credits, the cast list is separated into two sections: "Chapters 1 and 2: The Lost Prince/The New King" and "Chapters 3 and 4: "The Pirates of Tarnoonga/The Revenge of Kyboren". However, the voice actors listed under the first section are those from the 'Mungo Baobab' story arc from Star Wars: Droids (1985) and those listed under the first section are the cast for the correct, 'Mon Julpa' story arc. While there is some overlap, most of the actors in the first section did not provide any voices for the material edited into The Pirates and the Prince at all. Further more, some of the actors listed for the correct arc only performed voices in the episode that is not included in this compilation, Coby and the Starhunters (1985).
During the final battle, Kybo Ren is seen hiding behind some machinery, but his fat body isn't visible through the open underside.
When Kybo Ren says "And now that I have your fuel" the right part of his helmet turns the same color as his flesh for a few frames.