I was thinking about Knights of Sidonia. They bough the rights while second season was being made, and while I’m not sure whether they also Labelled the first season as Netflix Original, they at least took it down from everywhere and instead put it on their own site.

EDIT: Correction, as far as I can see, they bought the rights a month after the first season finished airing, and they did call the first season a Netflix Origin.

When the second season aired, I got pretty butthurt that I not only couldn’t see the new season on other sites than Netflix, but I couldn’t even see the first season anymore!