[tor-bugs] #15289 [Tor Browser]: Tor Browser doesn't close/exit correctly

[Tor Bug Tracker & Wiki]

#15289: Tor Browser doesn't close/exit correctly
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 Reporter:  remus        |          Owner:  tbb-team
     Type:  defect       |         Status:  new
 Priority:  normal       |      Milestone:
Component:  Tor Browser  |        Version:
 Keywords:               |  Actual Points:
Parent ID:               |         Points:
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 Tor Browser (4.0.4) is showing inconsistent and faulty behavior for me
 when I try to close it. When I close the browser, the window disappears
 like expected, but the process isn't terminated, it just keeps running
 (although not recognizable unless I start Tor Browser from the terminal).

 If I then later (in the same desktop session) want to open Tor Browser
 again, I get the "Firefox is already running" error popup.

 After restarting the computer, when I start Tor Browser, it opens normally
 but then, instead of a blank tab, shows this error page:
  Well, this is embarrassing.
  Tor Browser is having trouble recovering your windows and tabs. This is
 usually caused by a recently opened web page.
 and offering to restore the last tab from my previous session.

 This happens most, but not all of the time when I close the browser, and I
 haven't really been able to work out under what conditions it will work
 normally or fail like this. (Also not by starting it from a terminal with
 `--debug`.)
 Also, apart from this (after I click "Close" for the "restore my previous
 session" suggestion, or after I manually kill the still running process),
 everything seems to work fine. But it's still annoying.

 Versions:
 OS: Linux 3.18.6-1-ARCH x86_64
 Tor Browser: 4.0.4

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/15289>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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