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firefox opening tabs

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‘every time open a new tab add-on manager also opens,open another tab add on also opens,so if i open 3 tabs i have 3 add on tabs open’

‘every time open a new tab add-on manager also opens,open another tab add on also opens,so if i open 3 tabs i have 3 add on tabs open’

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

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