Issue about knockout groups.

[marcosps]

Hi guys!

I never saw this warning before, so I'm opening this issue:
[13:58:53.651] "Warning: TODO: Support knockout groups."
[13:58:53.651] "Warning: TODO: Support non-isolated groups."

Here is a link to the pdf with the error: http://dc230.4shared.com/download/XnQb9rEQ/LM-ED04.pdf

[SunboX]

👍 for Knockout groups support

Related PDF: http://www.zev-energie.de/PDF/schachtschein.pdf

[timvandermeij]

Another PDF testcase (from #3993): http://gondwanaland.com/i/software-eats-commons-linux-collaboration-summit-2013.pdf

[joepie91]

Not sure if this is directly relevant, but the following document is giving me Warning: Knockout groups not supported.: https://pdf.yt/d/1XdBtONLh-nGcAyv

[richerm]

PDFX-ready_Output-Test_301d_X4.pdf

Adding a really good PDF-X4 support document to show in Adobe and PDF.JS (see Page 2 - #10 - for Knockout support). I'll open another issue for overprint support.

[nicholasderk]

https://support.mozilla.org/en-US/questions/1168544#answer-988671

I've got another instance of this affecting rendering of a PDF that works in all other browsers and Acrobat Reader.

[thomasdarvik]

I get the same message "Warning: Knockout groups not supported.". Are there any internal changes lined up for the future that implements better support for knockout groups?

[marcosps]

Five years after opening the bug, I just found another example of the same warning:

https://archive.fosdem.org/2016/schedule/event/virt_iaas_ceph_rados_gateway_overview/attachments/audio/1077/export/events/attachments/virt_iaas_ceph_rados_gateway_overview/audio/1077/Fosdem_RGW.pdf

[SamyCookie]

and another one found in #3599 ticket: symbol1.pdf.

[marcosps]

Still reproducible with current Nightly flatpak.

[SandMoshi]

Can someone explain to me why the warning is there and what should be done about it?

[lovewinders]

I upgraded the pdfjs version to 2.5.207, the same problem will also occur