[tor-bugs] #22788 [Applications/Tor Browser]: PDF.js overloads CPU when opening large PDFs on higher security slider levels (was: Tor Browser rendering hangs when downloading large PDFs on higher security slider levels)

[Tor Bug Tracker & Wiki]

#22788: PDF.js overloads CPU when opening large PDFs on higher security slider
levels
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 Reporter:  teor                      |          Owner:  tbb-team
     Type:  defect                    |         Status:  new
 Priority:  Medium                    |      Milestone:
Component:  Applications/Tor Browser  |        Version:
 Severity:  Normal                    |     Resolution:
 Keywords:  tbb-security-slider       |  Actual Points:
Parent ID:                            |         Points:
 Reviewer:                            |        Sponsor:
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Comment (by cypherpunks):

 > I had to restart the browser.
 No, you hadn't. It's not a hang. You can wait until your tasks complete :)
 Enjoy the JIT-less world!

 As mentioned above, it'll be replaced in ESR59 because of many issues,
 including
 {{{
 Warning: AcroForm/XFA is not supported  viewer.js:7221
 Warning: Unimplemented widget field type "Btn", falling back to base field
 type. pdf.worker.js:3830
 }}}

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22788#comment:7>
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