Created attachment 8607046 [details] Bug Firefox.png User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Firefox/38.0 Build ID: 20150513174244 Steps to reproduce: Just have to go to a site trying to use the Storage API (local or session), and not visited yet (qwant.com, for example). Actual results: Block the JS code because call to Storage API does not open the pop-up about cookie preference to say: "allow", "just for the sessions" or "never", and throw a "SecurityError". Expected results: Open the pop-up to ask cookie storing preferences for the site before to throw an error and pause the script while there is no user answer about the cookie storing preference
Component: Untriaged → General
OS: Unspecified → Windows
Hardware: Unspecified → x86
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