旋转晶圆厂和5.0之前的工厂的阴影被克隆

Question

origin image

rotate FAB and the shadow is clipped

<?xml version="1.0" encoding="utf-8"?>
<objectAnimator xmlns:android="http://schemas.android.com/apk/res/android"
    android:interpolator="@android:anim/overshoot_interpolator"
    android:duration="300"
    android:propertyName="rotation"
    android:valueFrom="135f"
    android:valueTo="0f" >
</objectAnimator>

第一个动画师

<?xml version="1.0" encoding="utf-8"?>
<objectAnimator xmlns:android="http://schemas.android.com/apk/res/android"
    android:interpolator="@android:anim/overshoot_interpolator"
    android:duration="300"
    android:propertyName="rotation"
    android:valueFrom="0f"
    android:valueTo="135f" >
</objectAnimator>

第二个动画师

mExpandMenuAnimator = (ObjectAnimator)AnimatorInflater.loadAnimator(this,R.animator.fab_clockwise_animator);
mCollapsedMenuAnimator = (ObjectAnimator) AnimatorInflater.loadAnimator(this,R.animator.fab_anticlockwise_animator);
mFab = (FloatingActionButton)findViewById(R.id.home_fab);
mExpandMenuAnimator.setTarget(mFab);
mCollapsedMenuAnimator.setTarget(mFab);
mFab.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if (i == 0){
                i = 1;
                mCollapsedMenuAnimator.start();
            }else{
                i = 0;
                mExpandMenuAnimator.start();
            }
        }
});

FAB是支持lib FAB，以及如何解决阴影剪切问题， 或者只是旋转src drawable并不旋转所有FAB，但是怎么做？