This looks to be when the feature was first added in July 2016 by Alan Tan @tgxworld:
相关话题
| 话题 | 回复 | 浏览量 | 活动 | |
|---|---|---|---|---|
| Newly-created "unlisted" Topics send "new topic" Notifications | 14 | 1538 | 2025 年8 月 7 日 | |
| Discourse doesn't send notifications after an unlisted topic is listed | 3 | 301 | 2023 年10 月 7 日 | |
| Unlisted topic is visible in notification popup if a category is watched? | 10 | 2167 | 2017 年5 月 30 日 | |
| Unlisted topics notify users if their posts are linked | 11 | 2031 | 2018 年11 月 26 日 | |
| Unlisted option on creation of a new topic | 5 | 3782 | 2016 年3 月 30 日 |