Board Thread:Anime/@comment-27321453-20180826183015/@comment-1327106-20180827204156

Tdfern14 wrote: And the script was helped by Hajime Isayama who had a hand in it as he was disappointed with the Uprising Arc in his manga.

They made changes at Isayama's request, but Isayama himself was not the scriptwriter. He has no script writing credit, which he would if he had a direct hand in what was going on. I don't think he would have told them to introduce continuity errors. But he likely told them to pick up the pacing and make it more exciting, and while doing so things like Historia referring to things she shouldn't know were introduced by accident.