[tor-bugs] #31206 [Applications/Tor Browser]: http://ip-check.info detects browser window size with JS disabled

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#31206: http://ip-check.info detects browser window size with JS disabled
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 Reporter:  cypherpunks               |          Owner:  tbb-team
     Type:  defect                    |         Status:  closed
 Priority:  Medium                    |      Milestone:
Component:  Applications/Tor Browser  |        Version:
 Severity:  Critical                  |     Resolution:  not a bug
 Keywords:                            |  Actual Points:
Parent ID:                            |         Points:
 Reviewer:                            |        Sponsor:
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Comment (by cypherpunks):

 > Yes, CSS can do this, too.

 But how can CSS send back an HTTP request to the website, containing the
 info? It has no XHR capabilities.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/31206#comment:2>
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