No, this is not the first one and it won’t be the last one either. The cracked was caused by the over tightening of the stem securing bolt to the fork. It happens to a lot of people, so take care when tightening such bolt.
Better known as the titanium guy at Bike48/Brompton slimming center. Always trying to tell people titanium is 41% lighter than steel. Proactively modding up his Brompton with the leftover parts!