Bug 298770 [GTK2.18] Clicking in hover help eats left clicks for entire X session
Eclipse SDK 3.5.1 with Mylyn 3.2.2 Linux/Gtk x86_64 (Fedora 12 with gtk2-2.18.5-4.fc12.x86_64) The following happens both with and without GDK_NATIVE_WINDOWS=true. I can't make it happen in a VNC session with gtk 2.18 nor can I make it happen in a VNC session with gtk 2.16. For gtk 2.16, it appears that this clicking behaviour results in a click-drag or click-copy operation (I'm sure I'm using incorrect terminology there ;). - extend your Eclipse window vertically to the bottom of your display area - have a task list with a bunch of tasks - put your mouse cursor over the last item in the list - notice that the hoverhelp information appears over where your cursor is located - left click in the hover area This results in the inability to left click anywhere else in desktop. I have to restart X to get left clicking back.
bundles/org.eclipse.jface/src/org/eclipse/jface/window/ToolTip.java
public void handleEvent(Event event) {
			if (event.widget instanceof Control) {
				Control c = (Control) event.widget;
				Shell shell = c.getShell();
				switch (event.type) {
				case SWT.MouseDown:
					if (isHideOnMouseDown()) {
						toolTipHide(shell, event);
					}
					break;
				case SWT.MouseExit:
					/*
					 * Give some insets to ensure we get exit informations from
					 * a wider area ;-)
					 */
					Rectangle rect = shell.getBounds();
					rect.x += 5;
					rect.y += 5;
					rect.width -= 10;
					rect.height -= 10;
					if (!rect.contains(c.getDisplay().getCursorLocation())) {
						toolTipHide(shell, event);
					}
					break;
				}
			}
		}
	}
}