I just bought a new 3gen PT145. I have noticed that everytime I have the slide locked to the rear and then I insert a full magazine. The slide automatically pushes forward, without me releasing the slide, alomst everytime. This seems to happen a lot easier when the magazine is full rather when it is empty. But when with no magazine, I can even cause the slide to push forward by slapping the bottom of the grip. I was wondering if anyone has this happening with their PT145? Is this something to really be concerned about?