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Is turning off iFrames via about:config > browser.frames.enabled;false broken in Firefox 23?
Testing: I used this pages to test iFrames: •https://sites.google.com/site/annuairevin/test-page •http://www.w3schools.com/tags/tryit.asp?filename=tryhtml_iframe •http://www.quirksmode.org/iframetest.html
By blocking IFRAMES with NoScript blocking turned ON (you have to turn forbidding IFRAMES on manually in options http://i.imgur.com/7jctoTW.png) I managed to block IFRAMES on google and w3school pages.
!!!Text in iframe "Test page in iframe" on quirksmode test page was still shown even after I have frames turned OFF in about:config and I block all scripts and frames and iframes with NoScript.
Possible things that can cause bug: •I am using NoScript 2.6.7, I turned it off and on but it is possible that it is overriding Firefox settings in about:config. when you serach about:config for "frames" there are many settings mentioning frames from NoScript and AdBlockPlus. •AdBlock Plus 2.3.2? Same reason as NoScript. •Fot the first time I noticed Shield in the address bar with "Firefox has blocked content that isnt secure" bubble. http://i.imgur.com/K4FL65n.png. I dont know how long this feature is implemented or what exactly it does, here are some details: https://support.mozilla.org/en-US/kb/how-does-content-isnt-secure-affect-my-safety?as=u&utm_source=inproduct
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The documentation I find on browser.frames.enabled is very vague, but I can't see that it does anything currently. Is this a feature you used successfully in an earlier version?
The Mixed [Active] Content Blocker was turned on by default in Firefox 23. That would explain the shield icon. Not sure whether implementing that might have changed how iframes are handled.
Thx. I dont know if that feature was working in any time during development. I just found suggestions on google that this is the way to turn off iFrames in Firefox. I didnt see anybody complaining it doesnt work, but also no conformations that is works.