Here’s a temporary workaround (though not perfect) to do a quick feathering on most crops, mattes, and alphas:
Apply your crop or garbage matte
Apply the ‘roughen edges’ effect
Set the Border to desired width of the feather
Set the Edge sharpness to 0 to give it the feathery softness.
Set the Fractal influence to 0.
Save this preset as Feather Edges. (Edge Feather has already been taken’
I call this a temporary solution because I’m pretty sure Adobe will fix this ONLY IF there is enough requests on the wishlist, that’s how they work. SO PLEASE GO AND MAKE THIS REQUEST! 😀
I mean c’mon, if it works on ‘roughen edges’…