Artwork (background) does not render in XFA Foreground PDF

[JDziurlaj]

Attach (recommended) or Link to PDF file here: https://co.miami.oh.us/DocumentCenter/View/21632/Affidavit-of-Indigency?bidId=

Configuration:

• Web browser and its version: Firefox Nightly 91.0a1 (2021-06-25) (64-bit)
• Operating system and its version: Windows 10.0.19043.1052
• PDF.js version: N/A

Steps to reproduce the problem:

1. enableXFA in Firefox Nightly
2. Open form

What is the expected behavior? (add screenshot) Background PDF renders

What went wrong? (add screenshot) Four blank pages appear

[marco-c]

Affdavit of Indigency_202011250930184310.pdf

https://web.archive.org/web/20210626132434/https://co.miami.oh.us/DocumentCenter/View/21632/Affidavit-of-Indigency?bidId=

[JDziurlaj]

I can start attaching the forms if that's your preference

[calixteman]

Interesting file because there are some xfa streams but they're almost empty and if I disable xfa, the pdf is rendered correctly. So our heuristic to guess when a pdf should be rendered using xfa stuff is wrong here.

[JDziurlaj]

I think it is a foreground XFA form. These use a regular (non-XFA) PDF as the basis, and then you can put XFA controls "on top". In this case, they didn't add any controls.

[calixteman]

Thank you for the tip. So when we've a full xfa the flag /NeedsRendering in document catalog must be true and for a xfaf (XFA Foreground) it's unset of false.

[JDziurlaj]

Even for Static XFA, which generates a full AcroForm along with the XFA packets, you would still want to invoke the XFA engine so that certain interactivity can be achieved (via the JS API, assuming that's on the roadmap).

[marco-c]

I can start attaching the forms if that's your preference

Actually, it'd be great if you can post a web.archive.org link, so the PDFs will be available forever.

[shtstorm]

I can see the document now in FF 118. Not sure if it's a complete one though.