Soften Edges works exactly as it has for more than a decade. Share the file so we can see exactly what you’ve set up. Most likely you have Profiles turned off in the style but if you share the file we won’t have to guess.
It is the same file. I deleted the parts in my screenshot but they are copies of the upper-most piece of the fireplace mantel. I’m trying to soften that piece, and the curved parts of the light fixture close to the ceiling.
I’ve been trying to help you. You haven’t be explaining yourself well. I mentioned turning on Profiles in my first reply. When I opened your file Profiles were turned on although you had not updated the style. Turn on Profiles in the style again and update the style by clicking on the style’s thumbnail in the upper left corner of the Styles panel.