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Menu-pulldowns malfunction, after a while of usage, on mac Sonoma -- must re-start Firefox to re-activate !

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Menu-pulldowns malfunction, after a while of usage, on a large 2ndary monitor, on M1-Max macOS Sonoma -- I have to shutdown, and restart Firefox to re-activate !

Menu-pulldowns malfunction, after a while of usage, on a large 2ndary monitor, on M1-Max macOS Sonoma -- I have to shutdown, and restart Firefox to re-activate !

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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

Try to set widget.macos.native-context-menus => false in about:config.