#27543: QR code on http://web.whatsapp.com is only shortly visible in Tor Browser 8 -------------------------------------------------+------------------------- 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: -------------------------------------------------+-------------------------
Comment (by pospeselr): Replying to [comment:10 gk]: > Replying to [comment:9 pospeselr]: > > Replying to [comment:5 gk]: > > > Seems we need to flip `privacy.resistFingerprinting.autoDeclineNoUserInputCanvasPrompts` to `false` here as well, until the Mozilla bug gets fixed. I did that in `bug_27543` (https://gitweb.torproject.org/user/gk/tor- browser.git/commit/?h=bug_27543&id=ce60de442f949393b7f24acd153f82a57d78fe0e) in my public `tor-browser` repository. Please review. > > > > Unless I'm misundersanding things, it 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 ). > > No, https://bugzilla.mozilla.org/show_bug.cgi?id=1376865 has all we need already, I think (and made it into ESR 60). Ah my mistake, the pref getter is wrapped in the 'DOM_PREF' macro in /dom/base/DOMPrefsInternal.h which is used. This patch looks good to me! -- Ticket URL: <https://trac.torproject.org/projects/tor/ticket/27543#comment:11> Tor Bug Tracker & Wiki <https://trac.torproject.org/> The Tor Project: anonymity online
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