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I used to be able to open two sites (side by side) in the same screen. Now I can't - why?

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  • 最近回覆由 TonyE

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I need to have two sites open at the same time - and have done so in the past with Firefox. Now I can't. What am I doing wrong?

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There is no built-in feature to allow displaying two tabs at the same time, you may have had an add-on that allowed you to do this, such as Fox Splitter (formerly Split Browser).