Program: 191112
Project: 191112
Buggy source:
/** 
 * Update the background bounds to the new desired bounds
 */
private void updateBackgroundBounds(){
  mBackgroundBounds.left=(int)getX();
  mBackgroundBounds.right=(int)(getX() + getWidth());
  if (!mIsExpanded) {
    mBackgroundBounds.top=0;
    mBackgroundBounds.bottom=0;
  }
  ActivatableNotificationView firstView=mFirstVisibleBackgroundChild;
  int top=0;
  if (firstView != null) {
    int finalTranslationY=(int)StackStateAnimator.getFinalTranslationY(firstView);
    if (mAnimateNextBackgroundTop || mTopAnimator == null && mCurrentBounds.top == finalTranslationY || mTopAnimator != null && mEndAnimationRect.top == finalTranslationY) {
      top=finalTranslationY;
    }
 else {
      top=(int)firstView.getTranslationY();
    }
  }
  ActivatableNotificationView lastView=mLastVisibleBackgroundChild;
  int bottom=0;
  if (lastView != null) {
    int finalTranslationY=(int)StackStateAnimator.getFinalTranslationY(lastView);
    int finalHeight=StackStateAnimator.getFinalActualHeight(lastView);
    int finalBottom=finalTranslationY + finalHeight;
    finalBottom=Math.min(finalBottom,getHeight());
    if (mAnimateNextBackgroundBottom || mBottomAnimator == null && mCurrentBounds.bottom == finalBottom || mBottomAnimator != null && mEndAnimationRect.bottom == finalBottom) {
      bottom=finalBottom;
    }
 else {
      bottom=(int)(lastView.getTranslationY() + lastView.getActualHeight());
      bottom=Math.min(bottom,getHeight());
    }
  }
 else {
    top=mTopPadding;
    bottom=top;
  }
  if (mPhoneStatusBar.getBarState() != StatusBarState.KEYGUARD) {
    mBackgroundBounds.top=(int)Math.max(mTopPadding + mStackTranslation,top);
  }
 else {
    mBackgroundBounds.top=Math.max(0,top);
  }
  mBackgroundBounds.bottom=Math.min(getHeight(),Math.max(bottom,top));
}

Fixed version (ground truth):
/** 
 * Update the background bounds to the new desired bounds
 */
private void updateBackgroundBounds(){
  mBackgroundBounds.left=(int)getX();
  mBackgroundBounds.right=(int)(getX() + getWidth());
  if (!mIsExpanded) {
    mBackgroundBounds.top=0;
    mBackgroundBounds.bottom=0;
  }
  ActivatableNotificationView firstView=mFirstVisibleBackgroundChild;
  int top=0;
  if (firstView != null) {
    int finalTranslationY=(int)StackStateAnimator.getFinalTranslationY(firstView);
    if (mAnimateNextBackgroundTop || mTopAnimator == null && mCurrentBounds.top == finalTranslationY || mTopAnimator != null && mEndAnimationRect.top == finalTranslationY) {
      top=finalTranslationY;
    }
 else {
      top=(int)firstView.getTranslationY();
    }
  }
  ActivatableNotificationView lastView=mLastVisibleBackgroundChild;
  int bottom=0;
  if (lastView != null) {
    int finalTranslationY=(int)StackStateAnimator.getFinalTranslationY(lastView);
    int finalHeight=StackStateAnimator.getFinalActualHeight(lastView);
    int finalBottom=finalTranslationY + finalHeight;
    finalBottom=Math.min(finalBottom,getHeight());
    if (mAnimateNextBackgroundBottom || mBottomAnimator == null && mCurrentBounds.bottom == finalBottom || mBottomAnimator != null && mEndAnimationRect.bottom == finalBottom) {
      bottom=finalBottom;
    }
 else {
      bottom=(int)(lastView.getTranslationY() + lastView.getActualHeight());
      bottom=Math.min(bottom,getHeight());
    }
  }
 else {
    top=mTopPadding;
    bottom=top;
  }
  if (mPhoneStatusBar.getBarState() != StatusBarState.KEYGUARD) {
    top=(int)Math.max(mTopPadding + mStackTranslation,top);
  }
 else {
    top=Math.max(0,top);
  }
  mBackgroundBounds.top=top;
  mBackgroundBounds.bottom=Math.min(getHeight(),Math.max(bottom,top));
}