u/Mnnti

Forgive me as I am new to this, but I’m having an issue when it comes to firing more than one round. So when I put my slide on my Geisler 19x frame I have my recoil spring properly seated, but after firing one round it moves to where it is in the second picture. I also made sure the area was clean and untouched by gun oil after I cleaned it. Would this be caused by the barrel not holding it or does my recoil spring not have enough tension?