Not sure if this is by design but it seems illogical to me. If a user is watching a certain tag or category they are notified when staff create an unlisted topic in that category.* This defeats the point of having an ‘unlisted’ topic. I understand that one can access unlisted topics with a link but…

ユーザーに非公開トピック作成の通知

anon65426961 2023 年 7 月 18 日午前 2:09 13

This looks to be when the feature was first added in July 2016 by Alan Tan @tgxworld:

「いいね！」 2

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