I was cleaning my P-64 yesterday and when I got the slide back on, I noticed a little hang-up - as in the slide wasn't fully forward. I managed to take a video with my camera, so hopefully I'll be able to link it. If I rack the p-64 and let go, it goes forward, but if I gently let the slide down, it hangs at the last 1/2 in. Just a little pressure of my thumb on the back of the slide will rack it the rest of the way with a loud click. The safety is engaged.
As Curly1 stated, looks like it's working as it should be. My P64 is very tight and does the same thing. If I run the slide forward very slowly, it catches the hammer in the last 1/2 inch or so to decock, but closes if I push slightly on the back of the slide. It will not do that when shooting, the safe is off or if you rack it normally.