[tbb-bugs] #23724 [Applications/Tor Browser]: NoScript restartless update breaks Security Slider and its icon disappears

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#23724: NoScript restartless update breaks Security Slider and its icon disappears
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 Reporter:  gk                        |          Owner:  tbb-team
     Type:  defect                    |         Status:  needs_revision
 Priority:  High                      |      Milestone:
Component:  Applications/Tor Browser  |        Version:
 Severity:  Critical                  |     Resolution:
 Keywords:  noscript                  |  Actual Points:
Parent ID:                            |         Points:
 Reviewer:                            |        Sponsor:
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Comment (by gk):

 Actually, I already see
 {{{
 noscript-tbb not found!
 [Exception... "Failure"  nsresult: "0x80004005 (NS_ERROR_FAILURE)"
 location: "JS frame ::
 chrome://noscript/content/Restartless.jsm?0.5651077320914104.1507411556800
 :: loadIntoWindow :: line 166"  data: no]  (unknown)
 Could not overlay chrome://browser/content/browser.xul
 Restartless.jsm:197
 }}}
 before doing the update to 5.1.2rc2 just by copying 5.1.2rc1 over 5.0.10
 before even starting the browser once. Interstingly, the icon is still on
 the left side as it should be in that case. It only moves to the right
 side next to the search bar with the update.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/23724#comment:15>
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