When using two displays, there are wrong positions of GUI elements in comparison to using only one display. GUI elements can be a menu item or a selective list. Errors occur when moving the main window of the application a.text from the first screen to any other (second or third and so on). If the user activates a GUI element like a button for a selective list, this list will be shown on the first screen, i.e. the screen the software was initially started, not on the 2nd or 3rd. Explained in other words, the selective list is not rendered on the same display as the main window of the application.