Well, that feature is broken (not to mention the feature discussed in the title: it was outright removed): I regularly, when watching a series of videos all tit

Well, that feature is broken (not to mention the feature discussed in the title: it was outright removed): I regularly, when watching a series of videos all titled "Series Name: Part X", get Parts 7, 8, 9, 2 and 14 as recommendations in the sidebar after watching Part 6. Amusingly, even if all those videos are actually part of an existing and properly sorted playlist, it still happens if I don't play it as a part of that playlist (that is, if I remove "&list=ZZZ&index=5" from the URL)! What a brilliant technology.