"Cast & Crew" for TV _episodes_ is wrong

Cast & Crew seems to be mostly correct for Seasons. It shows everybody - or mostly everybody - who was involved in that season. However if go into individual episode - the Cast and Crew is random.

Look at Taskmaster for example: https://wetrakr.com/shows/1429155/seasons/2

People for Season 2 are correct. Now go into Episode 1 of Season 2: https://wetrakr.com/shows/1429155/seasons/2/episodes/1 Those are people from different seasons.

Trakt seems to be getting it wrong the other way around: https://app.trakt.tv/shows/taskmaster?season=2 - it shows all the people from all seasons but at least individual episodes are correct.