The [SSO No Phishing](https://github.com/mozilla-iam/sso-no-phishing) addon causes my 2019 15" MBP running macOS 11.0.1 to lockup and reboot. I've had this happen with Firefox release 83.0 as well as Dev Edition 84.0b2. I have not yet figured out why this is happening, but it has been reproduced by others. I also filed an [issue with the addon](https://github.com/mozilla-iam/sso-no-phishing/issues/12), but the problem is really with Firefox as an addon shouldn't be able to crash the machine. STR: 1. Upgrade a Mac to Big Sur 2. Start Firefox release channel with a fresh profile 3. Install [SSO No Phishing addon](https://addons.mozilla.org/en-US/firefox/addon/sso-no-phishing/) 4. Login to mozilla services (e.g. mana or gmail) via SSO and browse around for a while. It doesn't always happen immediately.
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The [SSO No Phishing](https://github.com/mozilla-iam/sso-no-phishing) addon causes my 2019 15" MBP running macOS 11.0.1 to lockup and reboot. I've had this happen with Firefox release 83.0 as well as Dev Edition 84.0b2. I have not yet figured out why this is happening, but it has been reproduced by others. I also filed an [issue with the addon](https://github.com/mozilla-iam/sso-no-phishing/issues/12), but the problem is really with Firefox as an addon shouldn't be able to crash the machine. STR: 1. Upgrade a Mac to Big Sur 2. Start Firefox release channel with a fresh profile 3. Update "Browser Privacy" setting to "Strict" 4. Install [SSO No Phishing addon](https://addons.mozilla.org/en-US/firefox/addon/sso-no-phishing/) 5. Login to mozilla services (e.g. mana or gmail) via SSO and browse around for a while. It doesn't always happen immediately.
The [SSO No Phishing](https://github.com/mozilla-iam/sso-no-phishing) addon causes my 2019 15" MBP running macOS 11.0.1 to lockup and reboot. I've had this happen with Firefox release 83.0 as well as Dev Edition 84.0b2. I have not yet figured out why this is happening, but it has been reproduced by others. I also filed an [issue with the addon](https://github.com/mozilla-iam/sso-no-phishing/issues/12), but the problem is really with Firefox as an addon shouldn't be able to crash the machine. STR: 1. Upgrade a Mac to Big Sur 2. Start Firefox release channel with a fresh profile 3. Update "Enhanced Tracking Protection" setting to "Strict" 4. Install [SSO No Phishing addon](https://addons.mozilla.org/en-US/firefox/addon/sso-no-phishing/) 5. Login to mozilla services (e.g. mana or gmail) via SSO and browse around for a while. It doesn't always happen immediately.