PDFBOX import page as form render hidden optional content group

Question

In last version of PDFbox 2.0.27 and previous version, when stream draw a PDFormXObject all disabled optional content group reappears.

This bug block all work with layered pdf. There is a way to totally removed ocg ? Do you have an idea ?

Edit : In a new PDocument, I add this pdf with multiple ocg.

https://www.pdfill.com/example/pdf_layer_new.pdf

Result with all ocg visible (WeTransfer file available 7 days) :

https://wetransfer.com/downloads/6550dcb45764d65fe96945b36e5d5b7220221010104929/2f07fd

PDDocument tmpPDFDocument = PDDocument.load(server.pdf());
LayerUtility utility = new LayerUtility(tmpPDFDocument);
PDFormXObject mapPDF = utility.importPageAsForm(tmpPDFDocument, 0);
stream.drawForm(form);

Edit 2 :

I try to clean maximum my code and after trying many times with 2.0.27, maybe it's my fault, do you see any error here ?

Result : https://wetransfer.com/downloads/8d8f27f182c5b47bc7226acd5595dff620221011134625/97ea54

    public void createFile2(File output, LayoutPage layoutPage, LocalServer server) throws IOException {
        // Creation du fichier de sortie
        if (!output.exists() && !output.createNewFile())
            throw new IOException();
        // initialise le format de la page pdf
        PDRectangle box = new PDRectangle(0f, 0f, 3000, 3000);
        PDPage page = new PDPage(box);
        // creation du document pdf avec la page, le document doit rester ouvert
        // pendant toute l'impression (ignore sonar recommendation)
        PDDocument document = new PDDocument();
        document.addPage(page);
        // initialise le context
        PDPageContentStream stream = new PDPageContentStream(document, page, PDPageContentStream.AppendMode.OVERWRITE, true, true);
        PDDocument tmpPDFDocument = PDDocument.load(server.pdf()); // file url to import here
        LayerUtility utility = new LayerUtility(tmpPDFDocument);
        utility.wrapInSaveRestore(tmpPDFDocument.getPage(0));

        PDFormXObject mapPDF = utility.importPageAsForm(tmpPDFDocument, 0);
        stream.drawForm(mapPDF);
        stream.close();
        document.save(output);
        document.close();
    }
    ```

Answer 1

Correct

LayerUtility utility = new LayerUtility(tmpPDFDocument);

to

LayerUtility utility = new LayerUtility(document);

LayerUtility must be initialized with the document you want to modify.