This is specific to Contact records. When a duplication is detected and you click save a pop-up window pops up that allows for merging of the records. The problem is this screen is not user friendly. You have no ability to resize the pop-up and expanding columns is quite gruesome because it doesn't allow for a vertical scroll bar. This is something the organizations should have more control over, but at the very least allow for the window to become a full screen, and not just a pop-up that you can't do anything with.