Since I updated to the latest version I'm not able to select a specific part of the picture and copy paste it to a new layer, only the whole picture gets pasted again and again. This never happened with the previous version, where I just selected the area I wanted to copy and then pressed Cmd+J and the area was pasted to another layer. Now nothing of this works anymore, not cmd+J, nor manual copy and paste, nothing. It doesn't recognize the selection I made with the selection tool, nor with the marquee tool, it only copies the entire picture again. This is very annoying, any suggestions?