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Firefox limiting pinned tabs to 3 tabs

  • 4 replies
  • 1 has this problem
  • Last reply by jonzn4SUSE

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Anytime I have more than 3 pinned tabs when I reopen firefox it will unpin all tabs except for the first 3. I can repin them and everything works fine until I close and reopen firefox, then it will unpin all tabs except the first 3. I have tried uninstalling and reinstalling firefox and still have the same issue.

All Replies (4)

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I have 9 pinned tabs. see screenshot What operating system? What version of Firefox?


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Here are two screen shots, the second shows what happens when I open firefox with more than 3 pinned tabs set.

Windows 10, latest version of firefox

Modified by kcthomas


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Start Firefox in Safe Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration or userChrome.css is causing the problem.

  • switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Themes
  • do NOT click the "Refresh Firefox" button on the Safe Mode start window

You can check for problems with the sessionstore.jsonlz4 file in the Firefox profile folder that stores session data.

  • delete sessionstore.jsonlz4 and sessionstore.js

When sessionstore.jsonlz4 is deleted you lose pinned-tabs and open tabs and you will have to recreate them, so if necessary make a note or bookmark them. sessionstore.jsonlz4 is only present in the Firefox profile folder when Firefox is closed.

You can use the button on the "Help -> Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:profiles page.


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Modified by jonzn4SUSE


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