[tor-bugs] #16639 [Tor Browser]: Check for Updates menu item can cause update failure

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#16639: Check for Updates menu item can cause update failure
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     Reporter:  mikeperry   |      Owner:  mcs
         Type:  defect      |     Status:  needs_review
     Priority:  major       |  Milestone:
    Component:  Tor         |    Version:
  Browser                   |   Keywords:  TorBrowserTeam201507R, tbb-5.0a4
   Resolution:              |  Parent ID:
Actual Points:              |
       Points:              |
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Comment (by mcs):

 Replying to [comment:5 mikeperry]:
 > If I repeatedly opened and clicked "Hide" on the "Check for Updates"
 window, the progress bar did not seem to make progress, and sometimes
 would also reset to 0 progress.
 >
 > I was testing on 5.0a2 though, updating to 5.0a3.

 We tried again to reproduce the problems you are seeing (with both TB
 5.0a2 and 5.0a3 on a Linux64 system).  But the download and progress bar
 always seem to pick up where they left off.  Can you set app.update.log =
 true and see what is logged when problems occur?

 We do sometimes see the download restart after we restart the browser (but
 sometimes it picks up where it left off).  Maybe we should open another
 ticket for that... probably a Mozilla bug but it is possible that the Tor
 network makes it happen more often somehow.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/16639#comment:6>
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