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

supermathie (Michael Brown) 2023 年 7 月 18 日午前 1:46 8

Unlisted topics were never intended to be secure.

They’re intended to be “lightweight hidden”.

「いいね！」 5

Newly-created "unlisted" Topics send "new topic" Notifications

トピック		返信	表示
Newly-created "unlisted" Topics send "new topic" Notifications Bug unlisting	14	1538	2025 年 8 月 7 日
Discourse doesn't send notifications after an unlisted topic is listed Support notifications , unlisting	3	301	2023 年 10 月 7 日
Unlisted topic is visible in notification popup if a category is watched? Support unlisting	10	2167	2017 年 5 月 30 日
Unlisted topics notify users if their posts are linked Bug pr-welcome , unlisting	11	2030	2018 年 11 月 26 日
Unlisted option on creation of a new topic Feature unlisting	5	3782	2016 年 3 月 30 日