[tbb-bugs] #21876 [Applications/Tor Browser]: e10s is not enabled on Linux (and probably OS X) by default in ESR 52 based nightlies

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#21876: e10s is not enabled on Linux (and probably OS X) by default in ESR 52 based
nightlies
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 Reporter:  gk                                   |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:  new
 Priority:  Very High                            |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Major                                |     Resolution:
 Keywords:  ff52-esr, tbb-7.0-must-alpha,        |  Actual Points:
  TorBrowserTeam201704                           |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
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Comment (by cypherpunks):

 mcs, what do you think about
 {{{
 [...] Torbutton WARN: DocShell is null for:
 https://trac.torproject.org/projects/tor/timeline
 }}}
 during NEWNYM?

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21876#comment:13>
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