If the trigger was hitting the back of the trigger, it would cause the trigger to react with each shot. The trigger rod may not have moved. If the trigger stop moved allowing the trigger to get closer, it would have the same effect.
The fix setting shuts off the trigger input until after the solenoid has turned off. The collapsing magnetic field was causing issues with the HES trigger sensor in some guns. A shorter dwell setting in your gun reduces the fix setting you need, if this is the cause of additional shots fired. The dwell should be around 15ms. If the fix setting is needed, just increase the value until the problem goes away. You can get rid of the problem by putting a filter on your HES output (trigger input) as well, then you don't need any adjustments.
Except for the Automag in front, its usually the man behind the equipment that counts.