http://ip-check.info detects browser window size with JS disabled

STR:

  1. Disable JavaScript by setting javascript.enabled to false in about:config
  2. Restart Tor browser (or use new identity)
  3. http://ip-check.info and "Start test!"
  4. New identity
  5. Resize window
  6. Repeat step 3

Result:

(I don't know how exactly but) Browser window size is detectable.

*(tested also in ungoogled-chromium with JS disabled - same result: window size detectable)

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