Java Swing - mouse pointer "shifted" on context menu when JFrame is maximized

I encoutered a strange behaviour of handling mouse position by Swing when maximizing JFrame: When I execute this very simple code... ``` public class Test { public static void main(String[] args) { SwingUtilities.invokeLater(new Runnable() { @Override public void run() { JFrame frame = new JFrame(); JMenuBar menubar = new JMenuBar(); JMenu menu = new JMenu("File"); menu.add(new JMenuItem("New")); menubar.add(menu); frame.setJMenuBar(menubar); frame.setSize(200, 200); frame.setLocationRelativeTo(null); frame.setVisible(true); } }); } } ``` ... I can normally click `File` (first click - press,release) -> `New` (second click). But when I maximize JFrame and click on `File` - context menu disappears on mouse release immediately. Moreover when I hold mouse button - to prevent disappearance - I must move my mouse much further to focus on `New` item. The red dot represents area (more or less) where I must move my mouse to focus on `New` after pressing `File` and holding mouse button. I've observed the same behaviour when using "right-click context menu" for example when right clicking on chart from JFreeChart. I thought it was JDK problem because I used Oracle's JDK, but after installing OpenJDK I have the same results. Did somebody observe this strange behaviour? Or am I missing something obvious? I use: - 1.7.0_147-icedtea (or 1.7.0_04 for java-7-oracle) - OpenJDK Runtime Environment (IcedTea7 2.0) (7~b147-2.0-0ubuntu0.11.10.1) - OpenJDK 64-Bit Server VM (build 21.0-b17, mixed mode) - Linux Mint 12 (lisa) GNOME 3.2.1