By bug 862222 people are now able to circumvent the caching of web fonts. Though this is not working if the fonts are used within an iframe. Test case: 1. Open the Web Console at http://www.w3schools.com/cssref/tryit.asp?filename=trycss3_font-face_rule 2. Reload the page via Ctrl+F5 => There's no request made for http://www.w3schools.com/cssref/Sansation_Light.ttf, which is used to display the text within the right iframe. Sebastian
Still an issue in Nightly 44.0a1 (2015-09-23). CC'ed Victor, as it also affects the devtools. Sebastian
Tried it on Nightly 57.0a1 (2017-08-17) and it's still an issue. Sebastian
status-firefox57: --- → affected
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