sample size n=1
Kahrs are probably the most notorious nose diver guns.
It is simple why too. Look at a loaded mag. You will notice not other gun has such a steep free floating angle on the second round in the mag. This round can move forward. Take a full mag and shake it.
That round then hits the ramp--nose dive.
I am not saying everyone Kahr does this. Nope. But their mag design is most prone to allow such a situation.