While dry practicing today, I found out something that I don't know is supposed to happen. I was practicing releasing the spent magazine with the slide stop engaged and racking a new magazine. If I gave the magazine a good pop to seat it in the gun, the slide stop disengages................chambering a round. If I softly push it in, it stays engaged........and I need to slingshot the slide (my preference) or hit the slide stop. What gives??? Normal operation or not???