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'Customize Toolbar' screen displays a moment, then disappears.

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  • 1 has this problem
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  • Last reply by cor-el

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I click 'Customize Toolbar', the screen displays a moment, then disappears. Today may be the first time I have used it since the last update.

All Replies (2)

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Hi Doc, sometimes an overactive popup blocker might close that tab, or maybe there is some other reason. Could you test in Firefox's Safe/Troubleshoot Mode? In that mode, Firefox temporarily deactivates extensions, hardware acceleration, any userChrome.css/userContent.css files, and some other advanced features to help you assess whether these are causing the problem.

If Firefox is running:

You can restart Firefox in Safe/Troubleshoot Mode using either:

  • "3-bar" menu button > Help > Troubleshoot Mode... (before Fx88: Restart with Add-ons Disabled)
  • (menu bar) Help menu > Troubleshoot Mode... (before Fx88: Restart with Add-ons Disabled)

and OK the restart. A small dialog should appear. Click the Open button (before Fx88: "Start in Safe Mode" button).

If Firefox is not running:

Hold down the Shift key when starting Firefox. (On Mac, hold down the option/alt key instead of the Shift key.) A small dialog should appear. Click the Open button (before Fx88: "Start in Safe Mode" button).

Note: Don't use the Refresh without first reviewing this article to understand what will be deleted: Refresh Firefox - reset add-ons and settings.

Any difference?

Helpful?

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This could also be a problem with the browser.uiCustomization.state pref on the about:config page that stores the toolbar customization, so you can try to reset this pref on the about:config page.

  • about:config => browser.uiCustomization.state

You can open the about:config page via the location/address bar. You can click the button to "Accept the Risk and Continue".

Helpful?

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