I found solution. But it seems like hack:
imageView.addEventHandler(MouseEvent.MOUSE_DRAGGED, new EventHandler<MouseEvent>() {
@Override
public void handle(MouseEvent mouseEvent) {
window.setMovable(false)
}
});
imageView.addEventHandler(MouseEvent.MOUSE_EXITED, new EventHandler<MouseEvent>() {
@Override
public void handle(MouseEvent mouseEvent) {
window.setMovable(true);
}
});