iOS app crashes after pressing info button on scanning screen with cn1-codescan lib

Issue related to https://github.com/codenameone/cn1-codescan

I create a bear bone application and added cn1-codescan lib to scan QR code.

In iOS version of the build, there is a Cancel and Info button at the bottom of the screen and when you press the info button, the application just crash/close immediately with no errors.

Here is an iOS app screenshot with info button causing the app crashes

Not reproducible in Android as there is simply no such buttons

The mentioned code is nothing else but a tutorial example

    CodeScanner.getInstance().scanQRCode(new ScanResult() {

    public void scanCompleted(String contents, String formatName, byte[] rawBytes) {
        //barCode.setText("Bar: " + contents);
        cnt.addComponent(new Label(contents));
        cnt.revalidate();
    }

    public void scanCanceled() {
        System.out.println("cancelled");
    }

    public void scanError(int errorCode, String message) {
        System.out.println("err " + message);
    }
});

I think it is something wrong with iOS native code and in particular with ZBar implementation of QR code scanning library but not sure what exactly. Could someone help please?