[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 ma1):

 Replying to [comment:18 gk]:

 > This looks better, thanks. But I still get:
 > {{{
 > TypeError: ABE is undefined[Learn More]  ABE.js:1198:21
 > TypeError: WAN is undefined[Learn More]  ABE.js:1186:23
 > TypeError: ABE is undefined[Learn More]  ABE.js:1198:21
 > TypeError: WAN is undefined[Learn More]  ABE.js:1186:23
 > No matching message handler for the given recipient.
 MessageChannel.jsm:621
 > }}}
 > in the browser console.
 >

 If you're installing over a previous restartless version (5.1.x) that's
 normal, noisy but no side effect, and nothing we can't do about it because
 those messages are from the previous instance. It shouldn't happen for new
 installations and/or upgrading / disabling+enabling over 5.1.2rc3 and
 above.

 And the icon is still jumping to the right. Any idea why this one in
 particular is happening?

 Again, if the icon has already "jumped" on the right there's nothing to do
 about it, because you cannot tell whether it happened because of a
 previous restartless version or becuase the user customized the position
 manually.

 However it should not change the icon position from where it's found
 initially (e.g. if you install on a fresh Tor Browser it should stay on
 the left).

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/23724#comment:19>
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