[tbb-bugs] #22396 [Applications/Tor Browser]: What does "never for this site" for the canvas warning really mean?

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#22396: What does "never for this site" for the canvas warning really mean?
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 Reporter:  arma                      |          Owner:  tbb-team
     Type:  defect                    |         Status:  new
 Priority:  Medium                    |      Milestone:
Component:  Applications/Tor Browser  |        Version:
 Severity:  Normal                    |     Resolution:
 Keywords:                            |  Actual Points:
Parent ID:                            |         Points:
 Reviewer:                            |        Sponsor:
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Comment (by gk):

 Tor Browser with its default settings behaves as you are expecting: new
 identity/browser restart blows your canvas related settings away. Not sure
 what a better phrasing would be "Not for this session" maybe? Or "Not
 until I close the browser"/"Not until the browser gets closed"? (We are
 sort of closing the browser during New Identity as well, so this should
 not be a problem)

 One thing to keep in mind is the case where users enabling disk history.
 It could be that "never" then really means "never". It's not nothing we
 really support, but hey, still worth testing for I guess.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22396#comment:1>
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