Photoshop CC, Windows 10 version. I know there is probably a simple setting that I must have turned on somewhere, but I cannot delete any selected item using the marqee tool, wand, and even CTRL+A. These are raster layers. If I attempt to create a new layer via copy, Photoshop duplicates the whole layer and ignores the selection area. Lastly, these issues appear to be within only this one document, so there must be a document setting I am missing somewhere.