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Firefox Window tabs tool?
What is this blue box and line, and how do I get rid of it?
What is this blue box and line, and how do I get rid of it?
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You've created a tab group. To get rid of it, right-click the blue box and click Ungroup tabs.
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Thank you. That did the trick. Was driving me nuts. Deleting the tab only made it go to the next one.