Heys guys, we're having an issue with some of our PDF documents that contains interactive fields like Radio Buttons. In some cases we've to merge PDF documents together (using the PDFMergerUtility) and when we try to print that merged document these Button elements are not rendered correctly, when using Apache PDFBox >= 2.0.22. Using the version 2.0.21 the buttons are rendered correctly.
I'm pretty new in the world of how PDF files work under the hood and how the PDF structure and fields is defined in the standard. So I did some research and could find out the reason for this misbehavior. It looks like that issue had been introduced with this commit: https://github.com/apache/pdfbox/commit/fe00cd3870f6d9ec27fcb55c89409b420ade0826 In the origin document (before entering the merge step) the NeedAppearances entry is set to true, but after the merge step the entry's changed to be false. I could figure out that this line of code is the reason for that: https://github.com/apache/pdfbox/blob/fe00cd3870f6d9ec27fcb55c89409b420ade0826/pdfbox/src/main/java/org/apache/pdfbox/pdmodel/fixup/processor/AcroFormGenerateAppearancesProcessor.java#L55 Is that an intended behaviour or is that an unintentionally sideeffect? Kind regards Sven Neufeind
smime.p7s
Description: S/MIME cryptographic signature
