Memory leak in admob sdk

[stasenkotsyandex]

Hi everyone, I detected memory leak. Open InterstitialExample, load ad, show, close ad and then rotate screen. I suppose the problem in InterstitialAd#show method. Leekcanary report:

┬───
│ GC Root: Global variable in native code
│
├─ com.google.android.gms.dynamic.ObjectWrapper instance
│    Leaking: UNKNOWN
│    Retaining 528 B in 1 objects
│    ↓ ObjectWrapper.a
│                    ~
├─ com.google.android.gms.ads.internal.webview.y instance
│    Leaking: UNKNOWN
│    Retaining 37.1 kB in 604 objects
│    View not part of a window view hierarchy
│    View.mAttachInfo is null (view detached)
│    View.mWindowAttachCount = 1
│    mContext instance of com.google.android.gms.ads.internal.webview.aw,
│    wrapping androidx.multidex.MultiDexApplication
│    ↓ y.a
│        ~
├─ com.google.android.gms.ads.internal.webview.ac instance
│    Leaking: UNKNOWN
│    Retaining 9.5 kB in 210 objects
│    View not part of a window view hierarchy
│    View.mAttachInfo is null (view detached)
│    View.mWindowAttachCount = 1
│    p instance of com.google.android.gms.ads.internal.webview.aw, wrapping
│    androidx.multidex.MultiDexApplication
│    mContext instance of com.google.android.gms.ads.internal.webview.aw,
│    wrapping androidx.multidex.MultiDexApplication
│    ↓ ac.aa
│         ~~
├─ android.view.WindowManagerImpl instance
│    Leaking: UNKNOWN
│    Retaining 27.7 kB in 467 objects
│    mContext instance of android.app.ContextImpl
│    ↓ WindowManagerImpl.mContext
│                        ~~~~~~~~
├─ android.app.ContextImpl instance
│    Leaking: YES (ContextImpl.mOuterContext is an instance of com.google.
│    android.gms.example.interstitialexample.MyActivity with Activity.
│    mDestroyed true)
│    Retaining 4.7 kB in 51 objects
│    mAutofillClient instance of com.google.android.gms.example.
│    interstitialexample.MyActivity with mDestroyed = true
│    mOuterContext instance of com.google.android.gms.example.
│    interstitialexample.MyActivity with mDestroyed = true
│    ↓ ContextImpl.mAutofillClient
╰→ com.google.android.gms.example.interstitialexample.MyActivity instance
​     Leaking: YES (ObjectWatcher was watching this because com.google.android.
​     gms.example.interstitialexample.MyActivity received Activity#onDestroy()
​     callback and Activity#mDestroyed is true)
​     Retaining 4.3 kB in 145 objects
​     key = 4c398712-68d9-420f-8e07-94cb18d5579b
​     watchDurationMillis = 9502
​     retainedDurationMillis = 4500
​     mApplication instance of androidx.multidex.MultiDexApplication
​     mBase instance of androidx.appcompat.view.ContextThemeWrapper

METADATA

Build.VERSION.SDK_INT: 29
Build.MANUFACTURER: Google
LeakCanary version: 2.9.1
App process name: com.google.android.gms.example.interstitialexample
Class count: 15590
Instance count: 112626
Primitive array count: 78846
Object array count: 14100
Thread count: 112
Heap total bytes: 13459103
Bitmap count: 7
Bitmap total bytes: 77519
Large bitmap count: 0
Large bitmap total bytes: 0
Db 1: open /data/user/0/com.google.android.gms.example.
interstitialexample/no_backup/androidx.work.workdb
Db 2: closed /data/user/0/com.google.android.gms.example.
interstitialexample/databases/google_app_measurement_local.db
Stats: LruCache[maxSize=3000,hits=39435,misses=75842,hitRate=34%]
RandomAccess[bytes=3766929,reads=75842,travel=21117064880,range=16389971,size=21
065444]
Analysis duration: 21081 ms