[Bug]: User tags missing - OneSignal.User.addTag("abc", "xyz")

[ayushi-sk]

What happened?

I am using
OneSignal.User.addTag("abc", "xyz")
to register tags of the user.

But tags for many users are missing on the dashboard.

Steps to reproduce?

Happened randomly

What did you expect to happen?

All tags should be registered

OneSignal Android SDK version

Release 5.1.34

Android version

15, 14, 13, 12, 11, 10, 9

Specific Android models

Relevant log output

Code of Conduct

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[jinliu9508]

Hello @ayushi-sk, thanks for reporting this issue.

We're currently looking into it, but we could use a bit more information to help diagnose the problem:

1. How often does this occur—frequently or only occasionally?
2. Does it happen more often for specific users or tags?
3. Do you have any logs from when this happens? It’s possible that the tag addition failed, and the response codes could help us understand why.

Thanks in advance for your help!

[ayushi-sk]

Hello @jinliu9508 ,

1. Frequently
2. There is no such pattern observed. Happens randomly
3. I tried reproducing this, but for me the tags were always present. But for production users, I see tags missing for a lot of users.

[ranim12]

Hello @ayushi-sk, I'm facing the same issue while using onesignal_flutter: 5.2.9. After setting the tags, they are unexpectedly getting deleted shortly after — regardless of the Android version. It seems like the tags aren't persisting for some reason.

Is there a known fix or workaround for this behavior?

[ayushi-sk]

Sorry, I couldn't find any workaround as of now.