It seems to me that Google translate is just playing the odds. It doesn't see "he is beautiful" very often (if at all), so it has two possible outputs: "she is

It seems to me that Google translate is just playing the odds. It doesn't see "he is beautiful" very often (if at all), so it has two possible outputs: "she is beatiful" or "he is beautiful" and goes with the most common one, as it not only should, but must.