In the plugin "facebook Container" I have made a new "tab category" called "social media" with a blue sign. The problem is that firefox continues to open FB in the old category even if I delete it, which is also very hard to do as I have to close all my FB-tabs to be able to delete it in the options tab. Next time I use firefox or a few days later firefox has again undeleted the old FB category and again opens my FB tabs in black tabs instead of my new blue tabs. I can´t use my own new tab category as long as the old one is there and it keeps comming back after I delete it. Very annoying to say the least! Please fix this error as soon as posible, thank you.