Hmm, my CZ82, which I picked up a few weeks ago and have not shot yet, is the exact opposite. The mag release button is stiff from both sides, and none of the three mags I have drop free. In fact, two of the three do not drop at all, and the other drops about 1/8". They go in and out tightly from the point that the front surface of the magazine contacts the mag catch. They do not hang up when released, but will pull out without a hitch, but they are snug, and I can feel the magazine dragging on the catch.
I still can't wait to shoot it. Congrats on your purchase, too.