After updating the Firebase iOS client SDK to version 12.16, iOS DAU data became inaccurate

[sopaco]

Description

After updating the Firebase iOS client SDK to version 12.16, iOS DAU data became inaccurate, showing significantly inflated numbers compared to actual usage.

Reproducing the issue

No response

Firebase SDK Version

12.16

Xcode Version

26

Installation Method

Swift Package Manager

Firebase Product(s)

Analytics

Targeted Platforms

iOS

Relevant Log Output

If using Swift Package Manager, the project's Package.resolved

Expand Package.resolved snippet

Replace this line with the contents of your Package.resolved.

If using CocoaPods, the project's Podfile.lock

Expand Podfile.lock snippet

Replace this line with the contents of your Podfile.lock!

[rizafran]

Thanks for reporting, @sopaco. I'm not sure if this resolves the issue, but could you try updating to 12.18.0 and see if the issue will persist? If so, I would suggest reaching out to Firebase support so the team could check your project, as this might be related to data discrepancy in Analytics dashboard.

[google-oss-bot]

Hey @sopaco. We need more information to resolve this issue but there hasn't been an update in 5 weekdays. I'm marking the issue as stale and if there are no new updates in the next 5 days I will close it automatically.

If you have more information that will help us get to the bottom of this, just add a comment!