I designed a PCB once that had a pin on a regulator connected to a ground pour. In the CAD tool the pour extended to the pad between two traces but when I gener

I designed a PCB once that had a pin on a regulator connected to a ground pour. In the CAD tool the pour extended to the pad between two traces but when I generated gerbers for the board the pour no longer connected to the pad. I didn't realize this until I got the board back. The bug was known and fixed in the next version but I didn't know about it at the time. Because of that board I now review all gerbers before I send them out for fab.