I don't get it what do you mean by shifting an element during a C/P action, do you mean that the element of some sort will be placed to an other X-Y coord. or option to do so?
when you do a copy and paste of some elements, the copied elements are diagonally shifted by a fixed amount which is equal to the grid step in x and y.
By deactivating this new option, you can choose to deactivate this behavior. This is useful for people working with libraries, where you tend to do continuously between FidoCadJ and a text editor.