A bug with XML tweening animation in Android

I'm testing some XML tweeing animations in Android but I faced a bug using 'Set' and 'translate' in one XML file.

Please check the following source code.

Below is my XML code from 'res/layout/activity_main.xml' file.

<LinearLayout xmlns:android="http://ift.tt/nIICcg"
    xmlns:tools="http://ift.tt/LrGmb4"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="${relativePackage}.${activityClass}" >

    <ImageView
        android:id="@+id/image1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/src" />

</LinearLayout>

Below is my Java code from 'MainActivity.java' file.

import android.app.Activity;
import android.os.Bundle;
import android.view.animation.AnimationUtils;
import android.widget.ImageView;

public class MainActivity extends Activity {

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        ImageView imageview = (ImageView) findViewById(R.id.image1);

        imageview.setAnimation(AnimationUtils.loadAnimation(this, R.anim.my_anim));
    }
}

Below is my XML code from 'res/anim/my_anim.xml' file which causes a problem.

What is the problem?

The problem is, whenever I add one more 'translate' animation, the starting position changes.

It has nothing to do with the options like 'startOffset', 'fillAfter'..

And please DO NOT metion about 'AnimationListener'.

I already tried and it helped with this problem, but it has a different problem which I'll deal with later.

Anyway, you will know what I'm saying if you try the code below removing a 'translate' animation one by one.

When only one 'translate' is left, the starting position goes right.

Is this a bug?

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://ift.tt/nIICcg"
    android:fillAfter="true" >

    <translate
        android:duration="3000"
        android:fromXDelta="0%"
        android:fromYDelta="0%"
        android:toXDelta="100%"
        android:toYDelta="0%" />
    <translate
        android:duration="3000"
        android:fromXDelta="100%"
        android:fromYDelta="0%"
        android:startOffset="3000"
        android:toXDelta="100%"
        android:toYDelta="100%" />
    <translate
        android:duration="3000"
        android:fromXDelta="100%"
        android:fromYDelta="100%"
        android:startOffset="6000"
        android:toXDelta="0%"
        android:toYDelta="100%" />
    <translate
        android:duration="3000"
        android:fromXDelta="0%"
        android:fromYDelta="100%"
        android:startOffset="9000"
        android:toXDelta="0%"
        android:toYDelta="0%" />

</set>