[tbb-bugs] #21778 [Applications/Tor Browser]: Canvas prompt is not showing up anymore in Tor Browser based in ESR52

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#21778: Canvas prompt is not showing up anymore in Tor Browser based in ESR52
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 Reporter:  gk                            |          Owner:  tbb-team
     Type:  defect                        |         Status:  new
 Priority:  Medium                        |      Milestone:
Component:  Applications/Tor Browser      |        Version:
 Severity:  Normal                        |     Resolution:
 Keywords:  ff52-esr, tbb-7.0-must-alpha  |  Actual Points:
Parent ID:                                |         Points:
 Reviewer:                                |        Sponsor:
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Changes (by mcs):

 * keywords:  ff52-esr => ff52-esr, tbb-7.0-must-alpha


Comment:

 This is a regression. Unless we plan to disable e10s, we should try to fix
 this for the alpha.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21778#comment:2>
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