PDF Link Navigation Not Working Anymore

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PDF Link Navigation Not Working Anymore

Postby dbuechel » Fri Jun 04, 2021 12:23 pm

We might be missing something, but we currently discovered that clicking a link within a PDF document doesn't trigger navigation anymore. SHIFT+click seems to trigger the navigation as expected, but it is unclear to us whether this is supposed to be this way or whether this is a bug? We use CefSharp, but the issue is reproducible with the cef_binary_90.6.7+g19ba721+chromium-90.0.4430.212_windows64_client sample application.
Attachments
Test.pdf
PDF document with links.
(68.14 KiB) Downloaded 25 times
dbuechel
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Re: PDF Link Navigation Not Working Anymore

Postby magreenblatt » Fri Jun 04, 2021 1:05 pm

This might be related to https://bitbucket.org/chromiumembedded/ ... avigate-to

What URL are you loading the PDF from? Is the clicked link a relative or absolute URL?

Does the problem reproduce with older/newer CEF versions?
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Re: PDF Link Navigation Not Working Anymore

Postby dbuechel » Sat Jun 05, 2021 9:40 am

Thanks for your feedback, your help is greatly appreciated as navigation from links within PDF documents is an important use case for us. We build the open-source software Safe Exam Browser, and many professors at our university use links within PDF documents which they provide as reference to the students during their exams.

What URL are you loading the PDF from? Is the clicked link a relative or absolute URL?

We can reproduce the issue when directly loading a local PDF document via a file://-URL as well as when placing a PDF document on a server and loading it via HTTPS, and it furthermore behaves exactly the same in our software as well as in the CEF sample application. The links in our test document are all absolute HTTPS URLs.

Does the problem reproduce with older/newer CEF versions?

We had another issue regarding navigation with modifier keys recently (February 2021), and in that context our testing verified that links within PDFs work as expected. In the meantime, we updated from CEF version 87.1.13 to CEF version 90.6.5 and thus we suspect that this might be a regression or a new bug introduced in Chromium or CEF.
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Re: PDF Link Navigation Not Working Anymore

Postby amaitland » Sat Jun 05, 2021 2:53 pm

Does the problem reproduce with version 91.1.6+g8a752eb+chromium-91.0.4472.77? Might get lucky and it's fixed in the next version.
Maintainer of the CefSharp project.
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Re: PDF Link Navigation Not Working Anymore

Postby dbuechel » Sun Jun 06, 2021 11:46 am

Does the problem reproduce with version 91.1.6+g8a752eb+chromium-91.0.4472.77? Might get lucky and it's fixed in the next version.


Thanks for the hint. I just checked it with the latest beta build of the CEF sample application, but the issue unfortunately persists.
dbuechel
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Re: PDF Link Navigation Not Working Anymore

Postby magreenblatt » Sun Jun 06, 2021 12:00 pm

Please add a bug in the issue tracker. Thanks.
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Re: PDF Link Navigation Not Working Anymore

Postby dbuechel » Mon Jun 07, 2021 4:51 am

Thanks for your help. I have created the following issue: https://bitbucket.org/chromiumembedded/ ... ot-working
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