What’s wrong with overridable method calls in constructors?

I have a Wicket page class that sets the page title depending on the result of an abstract method.

public abstract class BasicPage extends WebPage {

    public BasicPage() {
        add(new Label("title", getTitle()));
    }

    protected abstract String getTitle();

}

NetBeans warns me with the message “Overridable method call in constructor”, but what should be wrong with it? The only alternative I can imagine is to pass the results of otherwise abstract methods to the super constructor in subclasses. But that could be hard to read with many parameters.