What package does this bug report belong to?

pigeon

Affected Plugins that use pigeon: webview_flutter_android, interactive_media_ads

What target platforms are you seeing this bug on?

Android/Kotlin

Steps to reproduce

This is generated by using @proxyapi feature from pigeon.

Expected results

The InstanceManager contains:

fun stopFinalizationListener() {
    handler.removeCallbacks { this.releaseAllFinalizedInstances() }
    hasFinalizationListenerStopped = true
}

Instead of passing the Runnable that should be removed to handler.removeCallbacks, this is creating a new Runnable and not removing anything.