I am using FirefoxDeveloperEdition 36 on OSX 10.10.1. I turned on the option "Disable cache (when the toolbar is open)" on the toolbar settings panel:

However, I donβt see my changes until I manually clear the cache using Settings => Privacy => clear your recent history , even if I open the toolbar.
I am using RequireJS to load my script dependencies. It seems that other people had problems with RequireJS and caching , so I assume this is the main problem.
Does this option not work as promised, or am I doing something wrong? I would like to avoid, if possible, urlArgs workaround .
I did not notice this behavior in any other browser.
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