[tbb-bugs] #21340 [Applications/Tor Browser]: Identify and backport new patches from Firefox

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#21340: Identify and backport new patches from Firefox
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 Reporter:  arthuredelstein                      |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:
                                                 |  assigned
 Priority:  Medium                               |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  ff52-esr, TorBrowserTeam201704,      |  Actual Points:
  tbb-7.0-must-alpha                             |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
                                                 |  Sponsor4
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Comment (by cypherpunks):

 Replying to [comment:13 gk]:
 > Replying to [comment:12 cypherpunks]:
 > > Replying to [comment:11 gk]:
 > > > Replying to [comment:10 cypherpunks]:
 > > > > tbb-nightly:
 > > > > SVG is visible with svg.disabled=true (also svg.in-
 content.enabled=true exists on High Sec)
 > > >
 > > > Thanks. That's #21885 now.
 > > You're welcome (:
 > > Also downloading of zip file stalls reliably at 0 bytes with
 > > {{{
 > > [04-07 10:07:18] Torbutton INFO: External app requested
 > > http channel Listener OnDataAvailable contract violation
 > > }}}
 > Yes, I had seem something like that before but did not get to file a
 ticket yet. It is #21886 now (which contains a workaround as well),
 thanks.
 I think it's the same issue as in #21766, but with e10s off. Your
 workaround is the same as mine (:
 Also enabling plug-ins works only once: enable, press "no" to undo, enable
 again, and then there is no message box again, and no way to disable plug-
 ins as "disable plugins" button is missed in esr52.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21340#comment:14>
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