Mine did the same thing. I took it to the range and put about 40 rounds through it and it got better. The other post that mentions pulling the slide back a little further after it feels like it's all the way back is correct. When you field strip and clean it, make sure the recoil spring is perfectly centered when you put it back together or the slide won't go all the way back.
It will definitely get better though.
It will definitely get better though.

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