I am running Photo Mechanic version 6.0, build 5260 on MacOS Mojave 10.14.6.
If I am browsing my images in Preview, and then hit esc key to go back into Contact Sheet, I have my highlighted image as my last one browsed before hitting esc, and that is how it should be. I can press space bar to start browsing in Preview again exactly where I left.
However, if I decide to delete any image in preview mode with delete key, and then hit esc, then highlight disappears, and I can no longer move the hightlight with arrow keys and if I press Space to go back in to Preview it previews the first image in contact sheet, not the one I browsed before.
I believe it is a bug, right?