After updating from Firefox version 11 to version 12, there is no way I can move tabs on the tab bar. It seems like the tabs opened are completely locked. There is no drag and drop functions enabled for the Tab bar. Do you think that there is lock and unlock button for the tab bar which will enable and disable dragging/dropping of tabs? I always use permanent private browsing mode with third party cookies and cache disabled. Is it really a bug or this feature has been simply disabled in the latest browser?
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