I called Springfield Armory and received a prepaid FedEx label yesterday.
Yes, the slide stop will engage when it should not, holding the slide open with ammo still in the mag.
I have replaced twice the guide rod & recoil spring, one from SA and a one-piece from Kimber, one new SA slide stop, two plunger springs from Wolfe, 17 different magazines from SA, Wilson, McCormick and Tripp/ACT, and unknown variety of ammo. Still have same problem. My guess is the plunger tube is not securely attached to the slide.
The SA lady was very nice and said they will gladly look at it, about four week turnaround time.
Hindsight says I should have called Springfield about 10 month ago !!
Taurus has had my 3" Judge for four weeks to fix light primer hits and now the Springer has to go.