[tbb-bugs] #22254 [Applications/Tor Browser]: Our extensions get disabled in the Tor Browser 7.0a4 releases candidate

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#22254: Our extensions get disabled in the Tor Browser 7.0a4 releases candidate
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     Reporter:  gk                        |      Owner:  tbb-team
         Type:  defect                    |     Status:  new
     Priority:  Immediate                 |  Milestone:
    Component:  Applications/Tor Browser  |    Version:
     Severity:  Blocker                   |   Keywords:
Actual Points:                            |  Parent ID:
       Points:                            |   Reviewer:
      Sponsor:                            |
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 Testing the release candidate for Tor Browser 7.0a4 on a 64bit Linux
 machine results in disabled extensions on start-up with
 {{{
 1494766438500   addons.xpi-utils        DEBUG   New add-on
 torbutton at torproject.org installed in app-profile
 1494766438600   addons.xpi-utils        WARN    Disabling foreign
 installed add-on torbutton at torproject.org in app-profile
 1494766438600   DeferredSave.extensions.json    DEBUG   Save changes
 1494766438600   addons.xpi-utils        DEBUG   New add-on {73a6fe31-595d-
 460b-a920-fcc0f8843232} installed in app-profile
 1494766438600   DeferredSave.extensions.json    DEBUG   Starting timer
 1494766438700   addons.xpi-utils        WARN    Disabling foreign
 installed add-on {73a6fe31-595d-460b-a920-fcc0f8843232} in app-profile
 1494766438700   DeferredSave.extensions.json    DEBUG   Save changes
 1494766438700   addons.xpi-utils        DEBUG   New add-on https-
 everywhere-eff at eff.org installed in app-profile
 1494766438700   DeferredSave.extensions.json    DEBUG   Starting write
 1494766438700   DeferredSave.extensions.json    DEBUG   Write succeeded
 1494766438700   addons.xpi-utils        DEBUG   XPI Database saved,
 setting schema version preference to 19
 1494766438800   addons.xpi-utils        WARN    Disabling foreign
 installed add-on https-everywhere-eff at eff.org in app-profile
 1494766438800   DeferredSave.extensions.json    DEBUG   Save changes
 1494766438800   addons.xpi-utils        DEBUG   New add-on tor-
 launcher at torproject.org installed in app-profile
 1494766438800   DeferredSave.extensions.json    DEBUG   Starting timer
 1494766438800   addons.xpi-utils        WARN    Disabling foreign
 installed add-on tor-launcher at torproject.org in app-profile
 }}}
 This blocks the 7.0a4 release.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22254>
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