[tbb-bugs] #22543 [Applications/Tor Browser]: Tor Browser 7.0 shows window resize warning on every new window for a few seconds

Tor Bug Tracker & Wiki blackhole at torproject.org
Thu Jun 8 15:37:17 UTC 2017


#22543: Tor Browser 7.0 shows window resize warning on every new window for a few
seconds
-------------------------------------------------+-------------------------
 Reporter:  teor                                 |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:  new
 Priority:  Medium                               |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  ff52-esr, tbb-7.0-issues, tbb-       |  Actual Points:
  regression                                     |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
-------------------------------------------------+-------------------------
Changes (by mcs):

 * cc: arthuredelstein (added)
 * keywords:  ff52-esr, tbb-e10s, tbb-7.0-issues, tbb-regression =>
     ff52-esr, tbb-7.0-issues, tbb-regression


Comment:

 This is easy to reproduce, at least on OSX. It occurs even when e10s is
 disabled.

 After a window state change (`sizemodechange` event), the Torbutton code
 checks for `window.windowState === 1` (which is `STATE_MAXIMIZED`) and
 then adds the resize warning notification. In TB 7.0 that state occurs
 each time a new window is opened (at least in response to Cmd+N on OSX).
 But I don't know why. It seems to have something to do with the anti-
 fingerprinting window sizing code, because this problem does not occur if
 I set `privacy.resistFingerprinting = false`.

 I haven't tested this yet on Linux or Windows.

 A side note: it seems like we should add the warning for `windowState ===
 STATE_FULLSCREEN` too (but that is a different bug or a design decision
 that I am not familiar with).

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22543#comment:2>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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