Android app crashes without any exception, when trying to start an Activity from a foreground service

Question

When I try to start an activity from a foreground service and app is not in foreground state and removed from recent items as well, my app stops working without any exception. but works fine when app is in foreground state or main activity is opened.

"Draw over other apps" permission is also granted from app settings.

I'm using oneplus 7 Pro, running on android 11, API 30.

Please help me!!

ForgroundService.java

 public int onStartCommand(Intent intent, int flags, int startId) {

        Notification notification = new NotificationCompat.Builder(this, CHANNEL_ID)

                .setContentTitle("Content Title")
                .setContentText("Content Text")
                .setPriority(NotificationCompat.PRIORITY_DEFAULT)
                .build();

        startForeground(id, notification);

        Intent activityIntent = new Intent(this, SecondActivity.class);
        activityIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        this.startActivity(activityIntent);

        return START_STICKY; 
    }

SecondActivity.java

 @RequiresApi(api = Build.VERSION_CODES.O_MR1)
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    final Window win = getWindow();
    win.addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);
    win.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

    setTurnScreenOn(true);
    setShowWhenLocked(true);
    setContentView(R.layout.second_activity);
}

second_activity.xml

 <?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".SecondActivity">

<TextView
    android:id="@+id/textView"
    android:layout_width="219dp"
    android:layout_height="80dp"
    android:text="SecondActivity"
    android:textColor="#C50A0A"
    android:textColorLink="#B11212"
    android:textSize="30sp"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>

AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="com.example.app">

<uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW"/>


<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:roundIcon="@mipmap/ic_launcher_round"
    android:supportsRtl="true"
    android:theme="@style/Theme.BatteryApp">

    <activity
        android:name=".MainActivity"
        android:label="@string/app_name"
        android:theme="@style/Theme.BatteryApp.NoActionBar">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

    <activity android:name=".SecondActivity">
    </activity>

    <service android:name=".ForgroundService" />

</application>

Thanks!!