Leak in TorConnectionAssistFragment

🐞 Bug Report

┬───
│ GC Root: Global variable in native code
│
├─ org.mozilla.geckoview.GeckoRuntime class
│    Leaking: NO (HomeActivity↓ is not leaking and a class is never leaking)
│    ↓ static GeckoRuntime.sRuntime
├─ org.mozilla.geckoview.GeckoRuntime instance
│    Leaking: NO (HomeActivity↓ is not leaking)
│    ↓ GeckoRuntime.mServiceWorkerDelegate
├─ mozilla.components.browser.engine.gecko.serviceworker.
│  GeckoServiceWorkerDelegate instance
│    Leaking: NO (HomeActivity↓ is not leaking)
│    ↓ GeckoServiceWorkerDelegate.delegate
├─ org.mozilla.fenix.ServiceWorkerSupportFeature instance
│    Leaking: NO (HomeActivity↓ is not leaking)
│    homeActivity instance of org.mozilla.fenix.HomeActivity with mDestroyed =
│    false
│    ↓ ServiceWorkerSupportFeature.homeActivity
├─ org.mozilla.fenix.HomeActivity instance
│    Leaking: NO (TorConnectionAssistFragment↓ is not leaking and
│    Activity#mDestroyed is false)
│    mApplication instance of org.mozilla.fenix.DebugFenixApplication
│    mBase instance of androidx.appcompat.view.ContextThemeWrapper
│    ↓ ComponentActivity.onConfigurationChangedListeners
├─ java.util.concurrent.CopyOnWriteArrayList instance
│    Leaking: NO (TorConnectionAssistFragment↓ is not leaking)
│    ↓ CopyOnWriteArrayList[3]
├─ androidx.fragment.app.FragmentManager$$ExternalSyntheticLambda0 instance
│    Leaking: NO (TorConnectionAssistFragment↓ is not leaking)
│    ↓ FragmentManager$$ExternalSyntheticLambda0.f$0
├─ androidx.fragment.app.FragmentManagerImpl instance
│    Leaking: NO (TorConnectionAssistFragment↓ is not leaking)
│    ↓ FragmentManager.mParent
├─ org.mozilla.fenix.tor.TorConnectionAssistFragment instance
│    Leaking: NO (Fragment.mLifecycleRegistry.state is CREATED)
│    Fragment.mTag = 2f0d7771-2588-4b0b-8622-aa7412825e86
│    ↓ TorConnectionAssistFragment._binding
│                                  ~~~~~~~~
├─ org.mozilla.fenix.databinding.FragmentTorConnectionAssistBinding instance
│    Leaking: UNKNOWN
│    Retaining 245.2 kB in 2983 objects
│    ↓ FragmentTorConnectionAssistBinding.rootView
│                                         ~~~~~~~~
╰→ androidx.constraintlayout.widget.ConstraintLayout instance
​     Leaking: YES (ObjectWatcher was watching this because org.mozilla.fenix.
​     tor.TorConnectionAssistFragment received Fragment#onDestroyView()
​     callback (references to its views should be cleared to prevent leaks))
​     Retaining 4.3 kB in 87 objects
​     key = 4bb9f623-f454-4c73-980b-94e12d82a846
​     watchDurationMillis = 49898
​     retainedDurationMillis = 44897
​     View not part of a window view hierarchy
​     View.mAttachInfo is null (view detached)
​     View.mWindowAttachCount = 1
​     mContext instance of org.mozilla.fenix.HomeActivity with mDestroyed =
​     false

METADATA

Build.VERSION.SDK_INT: 36
Build.MANUFACTURER: Google
LeakCanary version: 2.14
App process name: org.torproject.torbrowser_debug
Class count: 43558
Instance count: 272077
Primitive array count: 198295
Object array count: 42359
Thread count: 58
Heap total bytes: 38224519
Bitmap count: 21
Bitmap total bytes: 626105
Large bitmap count: 0
Large bitmap total bytes: 0
Db 1: open /data/user/0/org.torproject.
torbrowser_debug/databases/recently_closed_tabs
Db 2: open /data/user/0/org.torproject.torbrowser_debug/no_backup/androidx.work.
workdb
Db 3: open /data/user/0/org.torproject.
torbrowser_debug/databases/mozac_downloads_database
Db 4: open /data/user/0/org.torproject.torbrowser_debug/databases/crashes
Db 5: open /data/user/0/org.torproject.torbrowser_debug/databases/manifests
Db 6: open /data/user/0/org.torproject.torbrowser_debug/databases/top_sites
Db 7: open /data/user/0/org.torproject.
torbrowser_debug/databases/tab_collections
Stats: LruCache[maxSize=3000,hits=130436,misses=252504,hitRate=34%]
RandomAccess[bytes=12664498,reads=252504,travel=114971627624,range=46790490,size
=57848018]
Analysis duration: 9880 ms

Reproduction steps

Launch and bootstrap app in debug mode

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