There are problems when PS CS6 is saved as JPEG.
When you save a picture in JPEG format using PhotoShop CS6, the file doesn't automatically change the sequence to.jpg. It just becomes a copy. Every time you want to save it as JPEG, you need to manually change the sequence to.jpg. My version of PhotoShop is 13.1.2 (for mac) , and its TIFF format is no problem. My computer system is macOS 10.13.6. This is Bug of PhotoShop CS6? !
