Jetpack Compose version: 1.2.0

Android Studio Build: Android Studio Chipmunk | 2021.2.1 Patch 1

Kotlin version: 1.7.0

Steps to Reproduce or Code Sample to Reproduce:

Opening and closing an Activity that uses ComposeView causes memory leak. Here's sample code used:

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(ComposeView(this))
    }
}

LeakCanary points to Recomposer.snapshotInvalidations.

Stack trace:

====================================
HEAP ANALYSIS RESULT
====================================
1 APPLICATION LEAKS
References underlined with "~~~" are likely causes.
Learn more at https://squ.re/leaks.
62741 bytes retained by leaking objects
Signature: d96e2a7ef94b93420bf533642d3bfbd136d1ddf1
┬───
│ GC Root: Thread object
│
├─ android.net.ConnectivityThread instance
│    Leaking: NO (PathClassLoader↓ is not leaking)
│    Thread name: 'ConnectivityThread'
│    ↓ Thread.contextClassLoader
├─ dalvik.system.PathClassLoader instance
│    Leaking: NO (SnapshotKt↓ is not leaking and A ClassLoader is never leaking)
│    ↓ ClassLoader.runtimeInternalObjects
├─ java.lang.Object[] array
│    Leaking: NO (SnapshotKt↓ is not leaking)
│    ↓ Object[49]
├─ androidx.compose.runtime.snapshots.SnapshotKt class
│    Leaking: NO (Recomposer↓ is not leaking and a class is never leaking)
│    ↓ static SnapshotKt.applyObservers
├─ java.util.ArrayList instance
│    Leaking: NO (Recomposer↓ is not leaking)
│    ↓ ArrayList[10]
├─ androidx.compose.runtime.
│  Recomposer$recompositionRunner$2$unregisterApplyObserver$1 instance
│    Leaking: NO (Recomposer↓ is not leaking)
│    Anonymous subclass of kotlin.jvm.internal.Lambda
│    ↓ Recomposer$recompositionRunner$2$unregisterApplyObserver$1.this$0
├─ androidx.compose.runtime.Recomposer instance
│    Leaking: NO (Recomposer is in state PendingWork)
│    ↓ Recomposer.snapshotInvalidations
│                 ~~~~~~~~~~~~~~~~~~~~~
├─ java.util.ArrayList instance
│    Leaking: UNKNOWN
│    Retaining 81,0 kB in 1797 objects
│    ↓ ArrayList[74]
│               ~~~~
├─ java.util.HashSet instance
│    Leaking: UNKNOWN
│    Retaining 63,0 kB in 1169 objects
│    ↓ HashSet[element()]
│             ~~~~~~~~~~~
├─ androidx.compose.runtime.ParcelableSnapshotMutableState instance
│    Leaking: UNKNOWN
│    Retaining 62,8 kB in 1164 objects
│    ↓ SnapshotMutableStateImpl.next
│                               ~~~~
├─ androidx.compose.runtime.SnapshotMutableStateImpl$StateStateRecord instance
│    Leaking: UNKNOWN
│    Retaining 62,8 kB in 1163 objects
│    ↓ SnapshotMutableStateImpl$StateStateRecord.value
│                                                ~~~~~
├─ androidx.compose.ui.platform.AndroidComposeView$ViewTreeOwners instance
│    Leaking: UNKNOWN
│    Retaining 62,8 kB in 1161 objects
│    lifecycleOwner instance of com.example.MainActivity with mDestroyed = true
│    savedStateRegistryOwner instance of com.example.MainActivity with mDestroyed = true
│    ↓ AndroidComposeView$ViewTreeOwners.lifecycleOwner
│                                        ~~~~~~~~~~~~~~
╰→ com.example.MainActivity instance
     Leaking: YES (ObjectWatcher was watching this because com.example.MainActivity received
     Activity#onDestroy() callback and Activity#mDestroyed is true)
     Retaining 62,7 kB in 1160 objects
     key = 7ee8d451-c62a-46e6-b33e-77bca0a5b8d2
     watchDurationMillis = 7788
     retainedDurationMillis = 2788
     mApplication instance of com.example.DossierApplication
     mBase instance of androidx.appcompat.view.ContextThemeWrapper