"auto" doesn't work for light photos

I'm trying to duplicate results for a photo from 2016.   I did filter > stylize > Find Edges and the used "auto" on that to get a much darker image (plus other enhancements).    Now when I do "find edges" in PS; then go to ACR and auto,  the image doesn't change at all ie "auto" has no effect on this very light image.   Why and is there any way to activate what should be a very simple operation for ACR (and worked great back in 2016).   Similar results if I take that Find Edges back to Lightroom to test if it's the same (NON) result.

Very perplexed,

Judy