Start *macos'* in safe mode https://support.apple.com/guide/mac-help/start-up-your-mac-in-safe-mode-mh21245/mac Still In Windows safe mode, start thunderbird in safe mode - https://support.mozilla.org/kb/safe-mode-thunderbird Does problem go away?
Bug 1675407 Comment 1 Edit History
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Start **macos** in safe mode https://support.apple.com/guide/mac-help/start-up-your-mac-in-safe-mode-mh21245/mac Still In Windows safe mode, start thunderbird in safe mode - https://support.mozilla.org/kb/safe-mode-thunderbird Does problem go away?