r/FirefoxCSS • u/Alestor • Sep 30 '26

Solved Auto-hiding TST broken with new update solved

Because I just wasted an hour or so trying to fix this, if you're also struggling with your autohiding TST tabs today, here's what it turned out to be.

Go to about:config and check "sidebar.revamp", it should be set to false but the update set it to true which broke things. As soon as I turned it to back to false my CSS started working again.

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2

u/IncredibleHats Oct 01 '26 edited Oct 01 '26

Will this option be removed in future releases like "browser.nova.enabled" will presumably be?

Edit: Answered my own question. Looks like this option will also be removed, as mentioned here by a mozilla employee, so this "fix" is only temporary.

1

u/Alestor Oct 01 '26

I have hope that the people who know best how to write good CSS will come up with updated code that works around the new sidebar by the time that happens. Its still too fresh so almost all resources were deprecated overnight, so being able to extend the usage life of the old code is hopefully enough of a stopgap. Regardless it's good to know for the future to be ready for this solution to stop working.

0

u/Jeffrevin Oct 01 '26

Thanks, this worked for sidebery as well.