I found a lot of the fuellers heavily rely on the automatic shut off valves to stop refuelling. In my case the valve did not close, and sprayed out on the apron from the opposite wing
This is standard procedure for all aircraft I have worked with over the last few decades. Early experiences that were unique and common were with the 74C, with the VTO system it was common to shut off prior to target, we would drop the sticks and pull a fuse out of the controller to disable it fueling to the sticks, eventually someone would forget to replace the fuse... Big MESS!
Operating these 74C freighters out of a airport in a hot environment it was also common to fuel the wings to max capacity at nite with expectations of an early morning departure. I can not count the times a slow operation pushed the departure, as things heated up volumetric expansion would either force the vent boxes to dump on the gate or more commonly spill during pushback. It was quite common.