[tbb-bugs] #18170 [Tor Browser]: After an update to Tor Browser 5.5 only changelog tab is shown

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#18170: After an update to Tor Browser 5.5 only changelog tab is shown
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 Reporter:  gk                                   |          Owner:  tbb-
     Type:  defect                               |  team
 Priority:  Medium                               |         Status:  new
Component:  Tor Browser                          |      Milestone:
 Severity:  Normal                               |        Version:
 Keywords:  TorBrowserTeam201602                 |     Resolution:
  tbb-5.5-regression                             |  Actual Points:
Parent ID:                                       |         Points:
  Sponsor:                                       |
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Comment (by mcs):

 Kathy and I reproduced this bug today and spent a little time debugging
 it. It seems that when staged updates are not used, about:tor is not
 opened. Of course staged updates are supposed to be used by default, but
 on Windows everything appears to get staged and then, upon restart, the
 staged files seem to be ignored in favor or re-applying the update from
 the mar file. So there may actually be two bugs:
 1. When staging is not used, about:tor is not opened. You can reproduce
 this on non-Windows platforms by setting app.update.staging.enabled =
 false before starting an update.
 2. Staging is not occurring correctly on Windows. This makes updates take
 longer.
 We will continue to debug.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/18170#comment:6>
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