Program: 63805
Project: 63805
Buggy source:
private void initFloatingMenu(final int sectionNumber,final Bundle savedInstanceState){
  int currentItem=((MainActivity2)getActivity()).mViewPager.getCurrentItem();
  if (sectionNumber == 0 || sectionNumber == 1) {
    Resources res=getResources();
    int action_item_padding=res.getDimensionPixelSize(R.dimen.float_action_item_padding);
    FloatingActionItem item1=new FloatingActionItem.Builder(0).withResId(R.drawable.ic_facebook).withDelay(50).withPadding(action_item_padding).build();
    FloatingActionItem item2=new FloatingActionItem.Builder(1).withResId(R.drawable.ic_twitter).withDelay(100).withPadding(action_item_padding).build();
    FloatingActionItem item3=new FloatingActionItem.Builder(1).withResId(R.drawable.ic_facebook).withDelay(0).withPadding(action_item_padding).build();
    FloatingActionItem item4=new FloatingActionItem.Builder(1).withResId(R.drawable.ic_instagram).withDelay(100).withPadding(action_item_padding).build();
    FloatingActionMenu.Builder builder=new FloatingActionMenu.Builder(getActivity()).withScrollDelegate(new FloatingActionMenu.AbsListViewScrollDelegate(getListView())).withThreshold(R.dimen.float_action_threshold).withGap(R.dimen.float_action_item_gap).withHorizontalPadding(R.dimen.float_action_h_padding).withVerticalPadding(R.dimen.float_action_v_padding).withGravity(sectionNumber == 1 ? FloatingActionMenu.Gravity.RIGHT | FloatingActionMenu.Gravity.BOTTOM : FloatingActionMenu.Gravity.RIGHT | FloatingActionMenu.Gravity.BOTTOM).withDirection(sectionNumber == 1 ? FloatingActionMenu.Direction.Vertical : FloatingActionMenu.Direction.Horizontal).animationDuration(200).animationInterpolator(new AccelerateDecelerateInterpolator()).visible(false);
    if (sectionNumber == 0) {
      builder.addItem(item1);
    }
 else {
      builder.addItem(item3);
      builder.addItem(item4);
    }
    mFloatingMenu=builder.build();
    mFloatingMenu.setOnItemClickListener(this);
  }
}

Fixed version (ground truth):
private void initFloatingMenu(final int sectionNumber,final Bundle savedInstanceState){
  int currentItem=((MainActivity2)getActivity()).mViewPager.getCurrentItem();
  if (sectionNumber == 0 || sectionNumber == 1) {
    Resources res=getResources();
    int action_item_padding=res.getDimensionPixelSize(R.dimen.float_action_item_padding);
    FloatingActionItem item1=new FloatingActionItem.Builder(0).withResId(R.drawable.ic_facebook).withDelay(50).withPadding(action_item_padding).build();
    FloatingActionItem item2=new FloatingActionItem.Builder(1).withResId(R.drawable.ic_twitter).withDelay(100).withPadding(action_item_padding).build();
    FloatingActionItem item3=new FloatingActionItem.Builder(1).withResId(R.drawable.ic_facebook).withDelay(0).withPadding(action_item_padding).build();
    FloatingActionItem item4=new FloatingActionItem.Builder(1).withResId(R.drawable.ic_instagram).withDelay(100).withPadding(action_item_padding).build();
    FloatingActionMenu.Builder builder=new FloatingActionMenu.Builder(getActivity()).withScrollDelegate(new FloatingActionMenu.AbsListViewScrollDelegate(getListView())).withThreshold(R.dimen.float_action_threshold).withGap(R.dimen.float_action_item_gap).withHorizontalPadding(R.dimen.float_action_h_padding).withVerticalPadding(R.dimen.float_action_v_padding).withGravity(sectionNumber == 1 ? FloatingActionMenu.Gravity.RIGHT | FloatingActionMenu.Gravity.BOTTOM : FloatingActionMenu.Gravity.RIGHT | FloatingActionMenu.Gravity.BOTTOM).withDirection(sectionNumber == 1 ? FloatingActionMenu.Direction.Vertical : FloatingActionMenu.Direction.Horizontal).animationDuration(200).animationInterpolator(new DecelerateInterpolator()).visible(false);
    if (sectionNumber == 0) {
      builder.addItem(item1);
    }
 else {
      builder.addItem(item3);
      builder.addItem(item4);
    }
    mFloatingMenu=builder.build();
    mFloatingMenu.setOnItemClickListener(this);
  }
}