Ok, this is a weird story on an older version but I was hoping that someone would have some pointers or maybe a similar experience. We have a forum (on 2.4.5 because of a bespoke plugin dependency) where people complain about duplicate notifications. Sometimes notifications are regenerated days after an event happened and after a user has seen (and clicked on) those notifications multiple times - in the Discourse UI (not in the app, not in the browser). posts for a topic: post_number | created_at -------------+---------------------------- 1 | 2020-06-22 17:06:42.531868 2 | 2020-06-23 00:11:07.159579 3 | 2020-06-24 00:35:06.000641 4 | 2020-06-25 00:17:16.998622 5 | 2020-06-29 00:00:39.712988 6 | 2020-06-29 01:03:20.137653 7 | 2020-06-29 01:32:45.604947 notifications for this user for this topic: id | notification_type | user_id | created_at | topic_id | post_number ---------+-------------------+---------+----------------------------+----------+------------- 1125345 | 5 | 956 | 2020-06-24 21:45:21.521173 | 39247 | 3 1133280 | 5 | 956 | 2020-06-29 01:27:32.242212 | 39247 | 6 1140349 | 2 | 956 | 2020-07-02 21:11:44.843782 | 39247 | 7 As you can see, a reply notification was generated for post #7 over 3.5 days after the reply was made. When grepping through the access logs to find out what happened at 21:11:44 we saw that this user was browsing through their Profile - Activity - Replies (/user_actions.json?username=redacted&filter=5&offset=240) at that exact second. It almost seems like browsing through those replies regenerated the notification. Relevant plugins are onesignal and push-notifications. Does anyone have ANY idea? EDIT a day later the notification for post #7 has been regenerated: id | notification_type | user_id | created_at | topic_id | post_number ---------+-------------------+---------+----------------------------+----------+------------- 1125345 | 5 | 956 | 2020-06-24 21:45:21.521173 | 39247 | 3 1133280 | 5 | 956 | 2020-06-29 01:27:32.242212 | 39247 | 6 1141684 | 2 | 956 | 2020-07-04 02:23:12.188685 | 39247 | 7

This sounds vaguely familiar to me as a bug we fixed at some point? Hard to say.

Hmm, relevant plugins are onesignal and push-notifications and follow. @outofthebox I think this is related [image] Recurrent Notifications from User Post due to Follow User plugin Support Hi Guys, One quick doubt, since I recovered my site from a backup, any time this one specific user replies to a topic, it generates constant “Edit” notifications to the user that created the Topic or that was being replied to. Tried to investigate and seems like there is something weird in Sidekiq, on the “Retries” section some jobs just keep piling there and never seem to succeed. After removing them, the notifications stop (until the person posts on another topic and then a new one is genera… The user that created the post (user #15356) that generates the notification to the user repeatedly receiving the notification (user #956) is: following the user receiving the notification followed by a user that does not exist (user #16229) : select user_id, name, value from user_custom_fields where user_id=15356; user_id | name | value ---------+--------------+------------------------ 15356 | followers | 16229 --> this user does not exist 15356 | following | 56,0 15356 | following | 956,0 --> the user receiving the notification

I’m not sure (yet), it seems a little different, but OTOH there is much in common.

Notifications being regenerated by looking through actions

Product Support

codinghorror (Jeff Atwood) July 4, 2020, 10:59pm 4

So this is another instance of the follow plugin bug?

Topic		Replies	Views
Recurrent Notifications from User Post due to Follow User plugin Product Support	4	1209	July 4, 2020
Repetitive Notification Issue with follow plugin? Product Support	5	703	August 12, 2021
Multiple notifications of same actions are sent to users Product Support	5	905	February 15, 2022
Notifications stuck on non-existing users due to follow plugin Product Support	9	1135	September 24, 2019
Users keep receiving notifications for the same post Product Support	4	694	June 8, 2019

Notifications being regenerated by looking through actions

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