Emptyspacingafterdeletionofitem

I tried to run and modify the sample project to test the removeItem function:

public void removeItem(int position) {
mItems.remove(position);
notifyItemRemoved(position);
}

After the removal, there is empty space at the bottom of the list.
And if the screen is fully filled by the empty space, the list will be "refresh" and scroll to the top of the list.
Is it a known issue or how can I avoid such behaviour of empty spacing?
Deeply appreciate your work! Big thanks!