Another validation glitch ?

Couldn't find what I am doing wrong. All requirements pass except - "If the snake is still alive, then we need to add a head and remove the last element from the snake's tail." which I am clearly doing.

public void move(int x, int y){

        SnakeSection new_section = new SnakeSection(getX()+x,getY()+y);

        checkBorders(new_section);
        checkBody(new_section);

        if(isAlive){

            if(new_section.getX()==Room.game.getMouse().getX() && new_section.getY()==Room.game.getMouse().getY())
            {sections.add(0,new_section);Room.game.eatMouse();}
            else{
                sections.add(0,new_section);
                sections.remove(sections.size()-1);
            }

        }

    }