So it is my first gun ever,
I bought it today, it was the last one they had ( it was on display). I first did not want to take it but they re-assured me it was brand new and never shot before. Two days ago, I rented out the p226 that they had for rental and it did not have that problem. I used the same ammo for both weapons. So basically I took it from the display and directly shot it as they told me it was all lubed up and ready to go.
After the first mag, the last cartridge stuck vertically in the extractor chamber. The next two mags, both times, the slide did not lock after the last round. I went and told the retailer that and he said it is perfectly fine as this gun is brand new and needs a couple hundred rounds to "break in". I am still not able to take the gun home as I do not have my transport license yet.