In the inspector there is an option for "Go to next object using." By default, Tab is checked, and Return & Enter are not. I find it very common in my solutions that the desired behavior is to have all three of these options checked. I've taken to adding new fields by duplicating existing field objects already on the screen when I remember so as to not have to adjust this setting with each new object, but occasionally, especially when using the field picker, I will forget and some will slip through the cracks. This is really only a minor issue of annoyance, but I was wondering if anyone was aware of a way to adjust this default behavior. Can someone point me to a setting somewhere that I'm overlooking, or shall I be off to submit a feature request?