I like to bring many files into the RAW editor from the organizer. For example if I bring in 50 files, I will often select all the files, change the clarity slider to +50 and hit Auto to let Photoshop decide what changes to make. I will then refine the sliders to better reflect what I think the changes should be, and I will often "copy" these changes to one or more images by selecting them and selecting the sliders from the first image.
This no longer works in Photoshop Elements 2019 and I suspect it is the "auto" feature that is causing the problem. If I select five images and select the sliders from the first image, the selections will not transfer to the other four images. I found the way around this problem, was to refine the sliders in the first image, select images two to five, and hit "Default" to reset the sliders. If I then selected all five images and entered the sliders from the first image, the changes did transfer to the other four images.
Sorry if I have not explained this very well. Perhaps the moderators can better describe what I am getting at.