I haven't frankly, I was just going by their notes which state that it does not. I might give PHPStorm a go with the trail version on the Open JDK.
They say that they don't support it. There's a difference between "doesn't work" and "isn't supported". Isn't supported implies that if you encounter a bug that is due to your choice of JDK, they will not feel obligated to fix it (though may still choose to do so if its practical for them to do so).