[tor-bugs] #27543 [Applications/Tor Browser]: QR code on http://web.whatsapp.com is only shortly visible in Tor Browser 8

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#27543: QR code on http://web.whatsapp.com is only shortly visible in Tor Browser 8
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 Reporter:  gk                                   |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:
                                                 |  needs_review
 Priority:  Medium                               |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tbb-8.0-issues, tbb-regression,      |  Actual Points:
  tbb-8.0.1-can, GeorgKoppen201809,              |
  TorBrowserTeam201809R                          |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
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Comment (by pospeselr):

 Replying to [comment:6 gk]:
 > Hm, I wonder whether we want to switch the default button being selected
 to "Don't Allow". Having the scary warning on the dialog ("This may be
 used to uniquely identify your computer.") does not really seem to fit to
 having the allow options pre-selected, just one click away.

 Unless I'm misundersanding things, tt looks like you'll have to backport
 some code in CanvasUtils.cpp for that option to do anything (
 https://searchfox.org/mozilla-
 central/source/dom/canvas/CanvasUtils.cpp#146 ).

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/27543#comment:9>
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