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

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#26381: about:tor page does not load on first start in localized Windows bundle and
browser is stuck in endless reload cycle
-------------------------------------------------+-------------------------
 Reporter:  gk                                   |          Owner:
                                                 |  pospeselr
     Type:  defect                               |         Status:
                                                 |  assigned
 Priority:  Very High                            |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tbb-torbutton, ff60-esr,             |  Actual Points:
  TorBrowserTeam201808                           |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
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Changes (by gk):

 * cc: sysrqb, ezio, ma1 (added)


Old description:

> When testing the Windows nightly builds I got greeted with an error page
> on first start
> {{{
>      <title>&aboutTor.title;</title>
> ------------^
> }}}
> This happened with a 32bit de bundle and I can't reproduce this on Linux.
> Moreover if I open `about:tor` in a new tab it works. From the second
> start on the `about:tor` page is shown as well.

New description:

 When testing the Windows nightly builds I got greeted with an error page
 on first start
 {{{
      <title>&aboutTor.title;</title>
 ------------^
 }}}
 This happened with a 32bit de bundle and I can't reproduce this on Linux.
 Moreover if I open `about:tor` in a new tab it works. From the second
 start on the `about:tor` page is shown as well.

 Furthermore, after the second session Tor Browser is stuck on an endless
 reload cycle when visiting websites and other extensions are broken.

--

Comment:

 So, it turns out that the endless reload cycle and broken extensions
 (#27261) are very likely caused by the same underlying issue as this bug:
 they don't appear once I set `security.sandbox.content.level` to `2` but
 appear as soon again as I set it to `3` or above.

 So, I closed #27261 as duplicate.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/26381#comment:15>
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