The developer toolbar, accessed using shift-F2, can no longer list or manage cookies, apparently since updating to Quantum. Any interaction with the cookie command, on any site I have tried, results in the following error message popping up: "Error: unsafe CPOW usage forbidden" This does not affect other commands I have entered - e.g. screenshot still works. I haven't seen anybody else mention this problem so wonder if there's something in my set-up causing it.