This question is related to this one : Mac (OS X 10.9.2) no longer saving screen shots
If I use only cmdshift it works as expected, a new image is created on my desktop. If I only want to copy it to the clipboard in order to paste it later into Photoshop or a Google Drive Document : I hear the sound but nothing append when I paste it (using cmdV) . I'm using Sierra 10.12, I'm new on macOS so that's maybe a stupid thing, the options "copy to clipboard" is checked in the system pref :
Any Idea how to solve it ?