ADDITIONAL SYSTEM INFORMATION :
MacBook Pro M3 / Os X 14.5 and above / Adoptium Java 21.0.4 LTS JDK / JavaFx 21.0.4

A DESCRIPTION OF THE PROBLEM :
When using the webview component in a JavaFX application to display a login web page, after trying to login, the web application is doing (multiple) redirects. During this redirect, a Fatal error ocurs which can not be try/cached.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Create a Webview component
2. Add a listener to the webengine component
3. Let the web application do (multiple) redirects

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The new web page should be visible
ACTUAL -
Complete crash of the application

---------- BEGIN SOURCE ----------
@FXML
public WebView webView;

WebEngine webEngine = webView.getEngine();
String portalUrl = "some url";
String redirectUrl = "some url";

...

    private void addListeners() {

        // Add listener to the url property
        // If url changes, login was executed
        webEngine.locationProperty().addListener(
                new ChangeListener<String>() {
                    @Override public void changed(ObservableValue ov, String oldState, String newState) {
                        if(oldState != null){
                            if (!oldState.equals(newState)) {

                                if(newState.indexOf(redirectUrl) == 0){
                                    // We are on our final destination
                                    // Do stuff
                                    
                                }else if(newState.indexOf("?error=")>-1){
                                    webEngine.load(portalUrl);
                                }

                            }
                        }
                    }
                });

        if(!"".equals(portalUrl)){
            webEngine.load(portalUrl);
        }
    }
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
Not yet found

FREQUENCY : always