Printing method only prints once, despite multiple calls

Question

Im having the problem, that a method isn't printing on its second (or more) call, despite working fine on the first time and I just can't see what's the problem.

public class Main {
    
public static void main(String[] args) {

        Field playingField = new Field(5, 5);
        playingField.fillField();
        TransitionRules transitionRules = new TransitionRules();
        playingField.printField();
        transitionRules.fieldTransition(playingField);
        System.out.println();
        playingField.printField();

}

it is about the playingField.printField()-method, which I have implemented in a different class like this:

public class Field {

private int xSize;
private int ySize;

public ArrayList<Cell> field = new ArrayList<Cell>();
    
    public void printField() {
    for (int i = 0; i < this.ySize; i++) {
        for (int j = 0; j < this.xSize; j++) {
            System.out.print(this.field.get((i*10)+j).getState() + " ");
            System.out.print(this.field.get((i*10)+j).getyCoordinate() + " ");
            System.out.print(this.field.get((i*10)+j).getxCoordinate() + " ");
            System.out.print((i*10)+j + " ");
        }
        System.out.println();
    } 
}

I already tried printing it twice, before applying the fieldTransition()-method, but it did not work, so that also isn't the problem.

Any help is much appreciated.