Actually "quite simple," because everyone agrees that the doors should close flush and without a bend in the middle. It is certainly intended this way by the manufacturer. The question here is exactly what the problem is, whether the doors were ordered too long or too short :) Based on the first picture, it initially looked as if they were too long. However, since the representation of the front lower corner is not shown in the picture, they could actually be too short, so that they are drawn further inward and a bend occurs. This is certainly not in line with the inventor's intention.