i am the new owner of a fnp45. because of work i havent made it to the range yet. the other day after work i took it out to clean it for my upcoming trip to the range and i noticed that the slide release on the left of the gun will work fine with the gun unloaded but the one on the right will only work with a round in the mag. i figured this out with a dummy round. i shoot left handed and would be using the right side slide release and could not get it to function with the gun unloaded.this gun is brand new and my first fn so is this normal?