Why is the Android App Icon not coming up in App Info and Clear Tasks?

I have successfully changed the App Icon for the Android App and is being displayed properly in Menu with logo and app name as iTest Game.

App Icon in Menu

But the app icon is not coming in App Info and in Clear Tasks.

App Icon in App Info & Clear Task

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.itestgame">

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

    <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/AppTheme">
        <activity android:name=".Home">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".Activity1" />
        <activity android:name=".GameOver" />
        <activity android:name=".Activity2" />
        <activity android:name=".Activity3" />
        <activity android:name=".Activity4" />
        <activity android:name=".Activity5" />
        <activity android:name=".Activity6" />
        <activity android:name=".MainActivity"></activity>
    </application>

</manifest>

My phone models are Xiaomi Redmi Note 3 and Samsung Galaxy Grand Quattro. I am not able to figure out why the App Icon is not coming at these places.

Thanks in advance.