Vaadin 24 - Pdf file not shown in viewer

[paodb]

Running a simple example in a Vaadin 24.0.0.rc1 application, the pdf file is not rendered in the viewer.

 PdfViewer pdfViewer = new PdfViewer();
 pdfViewer.setSizeFull();
 StreamResource resource = new StreamResource("example.pdf", () -> getClass().getResourceAsStream("/pdf/example.pdf"));
 pdfViewer.setSrc(resource);
 pdfViewer.setAddPrintButton(true);
 add(pdfViewer);   

Download works okay and printing too.

IDE shows no error. Browser console shows no error, but some warnings:

[paodb]

Not a bug, just remember to set height to the parent layout.