Merge visible has stopped working correctly. If I have a posterized layer on top of my background that is heavily posterized, merge visible, merge down and flatten are removing the treatment as I see it. Further, in Bridge, the posterizing effect is improperly/weakly rendered.
Photoshop CC 14.2 x64 on Mac OS 10.9.1
Thanks for your interest Chris. I tried Merge Visible, Merge Down and flatten. I tried to save as tiff and as jpg and none resemble what I see. The only think I can think of now is that my images are large so that when I do first round posterizing I'm at 12.5% and that maybe this is a disconnect with the image viewed at that size. The weird thing is that one of the images worked just fine and appears correctly in the Bridge thumbnail.
I'm happy to provide you with screen shots, but there's some tasteful nudity so I don't think it's appropriate to add to the thread.