[tbb-bugs] #26381 [Applications/Tor Browser]: about:tor page does not load on first start on Windows and browser is stuck in endless reload cycle

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#26381: about:tor page does not load on first start on Windows and browser is stuck
in endless reload cycle
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 Reporter:  gk                                   |          Owner:
                                                 |  pospeselr
     Type:  defect                               |         Status:
                                                 |  needs_revision
 Priority:  Very High                            |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tbb-torbutton, ff60-esr,             |  Actual Points:
  TorBrowserTeam201809                           |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
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Comment (by pospeselr):

 Replying to [comment:31 brade]:
 > * Startup of components that have the `profile-after-change` category.
 We think this one is an issue. For example, after applying the proposed
 fix we saw the update service attempt an update ping while the Tor
 Launcher initial configuration window was open.

 This does seem to be a problem, and it doesn't seem like we can fix it in
 the extension.  Went through this today and can confirm, tor-launcher
 blocks on 'profile-after-change' until the network settings dialog is
 dismissed, which allows the update service and what-not to complete after
 a tor connection has been set up.

 I've done some digging into the original proposed patch (moving the
 sandbox init up before DoStartup) and I can confirm that it does configure
 all of the directories correctly, except for the
 NS_APP_USER_PROFILE_50_DIR directory, which will probably cause some
 issues (though it seems to be init'd sometime between the entry into
 DoStartup and the first service initialization in there).  I'll see if we
 can encourage NS_APP_USER_PROFILE_50_DIR to be defined earlier tomorrow.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/26381#comment:33>
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