[tbb-bugs] #26540 [Applications/Tor Browser]: Enabling pdfjs disableRange option prevents pdfs from loading

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#26540: Enabling pdfjs disableRange option prevents pdfs from loading
---------------------------------------------+---------------------------
 Reporter:  pospeselr                        |          Owner:  pospeselr
     Type:  defect                           |         Status:  closed
 Priority:  Medium                           |      Milestone:
Component:  Applications/Tor Browser         |        Version:
 Severity:  Normal                           |     Resolution:  fixed
 Keywords:  ff60-esr, TorBrowserTeam201811R  |  Actual Points:
Parent ID:                                   |         Points:
 Reviewer:                                   |        Sponsor:
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Changes (by gk):

 * status:  needs_review => closed
 * resolution:   => fixed


Comment:

 Okay, this looks promising. I cherry-picked the fixed up commit to `tor-
 browser-60.3.0esr-8.5-1`.

 Could you file an upstream bug blocking
 (https://bugzilla.mozilla.org/show_bug.cgi?id=1299996) and feel free to
 just try to get it upstreamed right now. I hope that won't be that hard
 and delaying work on #3600.

 Oh, and while you are at it: while testing your patch I got tons (i.e.
 hundreds) of
 {{{
 Attempting to post a message to window with url
 "resource://pdf.js/web/viewer.html" and origin
 "resource://pdf.js^firstPartyDomain=amnestyusa.org" from a system
 principal
 scope with mismatched origin "[System Principal]"
 }}}
 messages in my browser console. Those are not related to your patch, but
 could you file a FPI bug blocking the above one as well (or maybe the
 FirstPartyIsolationQA bug, I am not sure)? I have not checked whether
 those messages are actually a sign of something that is deeper wrong or
 whether it's just console spam.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/26540#comment:21>
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