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Tabs on bottom in ff 88

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Just updated to 88.0.1. Had put it off for as long as possible because...

I've lost my tabs on bottom! How do I get them back, please?

Just updated to 88.0.1. Had put it off for as long as possible because... I've lost my tabs on bottom! How do I get them back, please?

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Forgot to mention I'm having this issue on my laptop that is running Windows 8. Haven't tried the upgrade yet on my W10 desktop browser.

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userChrome.css code that works in Firefox 76+ should work on Firefox 88. For example, you could look at:

https://support.mozilla.org/questions/1305615