Custom aspect ratio / scale fit mode for Chromatic Aberration post effect

I’ve noticed the post effect while applying a bigger number for intesity is it stretches the sides unequally, as if on the inside it does not acoount the texture input is a rectrangle but rather takes it as 1x1 square and then does not account to stretch it properly back as per the 16:9 aspect ratio. It would be nice to have a scale factor to it like for Screen Image.