According to change: "8145284: [Documentation] [TextField] Missing new line character handling"

"If {@code text} contains EOL character, then it will be replaced by space character."

EOL as defined by Java (System.lineSeparator()) is :

 * <p>On UNIX systems, it returns "\n" and on Microsoft Windows systems it returns "\r\n".

Running the below mentioned code on Windows machine, should not provide a space as "\n" is not a valid EOL for Windows.

String text = "line1";
        String text1 = "line2";
        if(System.getProperty("os.name").contains("Win")) {
            TextField textField = new TextField(text + "\n" + text1);
            System.out.println(textField.getText());
        }

If this has been done for the native level simulation, the spec need to change accordingly. It has to mention "EOL" and "\n" (For windows)