I was trying to use an application that used z+x+enter as a key combination. I noticed that those three keys do not register all at the same time. If I press any two out of that combination and then press the third, the third never registers. If I change the key bind to a+s+enter then I am able to press all three at the same time. Is this expected behavior?
It would appear so.
Enter are on the same row of the key matrix, and
x are on the same column.
That looks accurate to me. Thank you for the informational link!