I dunno if this is a bug, but looking at this page...
https://www.tvmaze.com/people/308781/astrid-deinhard
...episodes listed are ordered neither alphabetically nor by their release date. They are rather mixed which is pretty confusing. Shouldn't there be some order to it at least?
They are also not ordered by the date they were added to the database either. Not sure how that randomness is determined.
Personally, having them ordered by the date they aired would make most sense, imho. But any order would be better than this :D