[question]: ANR: OneSignalUser.lifecycleInit blocks main thread via waitForInit on app startup

[hamidZodray4534]

How can we help?

Bug Report

SDK Version

• onesignal_flutter: 5.5.4
• Flutter: (your flutter version)
• Android: (your target SDK)

Description

The app receives repeated ANRs in production (Google Play Console) caused by
OneSignalUser.lifecycleInit blocking the main thread via runBlocking inside
waitForInit. This happens automatically when the Flutter method channel is
registered — before any user Dart code calls OneSignal.initialize().

The ANR is NOT caused by user code. It is triggered internally by the plugin
itself via lifecycleInit on onMethodCall.

ANR Stack Trace

Code of Conduct

• I agree to follow this project's Code of Conduct

[fadi-george]

Hello @hamidZodray4534 ,
Could you try v5.5.5 and see if ANR rates drop.
If that doesn't help, then please provide a stack strace.

[marcusvpais]

Hi this issue persist and is increasing my APPs ANR consistently. Latest version .6 did not fix it. Please help, we're even considering switching to another platform since play store is penalizing apps with high ANR.