Reject all third-party cookies toggle

[kingbin]

I'm not sure if this is intended and works as expected.

It seems this toggle overrides the "Exceptions - Cookies and Site Data" and ignores the allow/allow for session/block list. I have to disable the extension and use firefox's default "block third-party cookies" option to utilize my site exception list.

[dirrgang]

Can confirm, this issue drove me crazy because I couldn't figure out why my cookie exceptions stopped working. It seems like a recent patch has altered the behaviour of the add-on which now ignores cookie exceptions set in the browser setting.
EDIT:
Turns out I was wrong! It seems to be a bug that has been introduced in the past that changes the behaviour of delete all third party cookies and cookie exceptions.

This is the mozregression result:
app_name: firefox
build_date: 2019-05-27 06:37:03.930000
build_file: C:\Users\me.mozilla\mozregression\persist\e1edc78e9b42-shippable--autoland--target.zip
build_type: inbound
build_url: https://queue.taskcluster.net/v1/task/IjPn73ykRCiPa5s2s7Qn4w/runs/0/artifacts/public%2Fbuild%2Ftarget.zip
changeset: e1edc78e9b428352976d423c5cc5315b238f3583
pushlog_url: https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=b223e35b6540089f2f9e7db8902f12cf85bb9c16&tochange=e1edc78e9b428352976d423c5cc5315b238f3583
repo_name: autoland
repo_url: https://hg.mozilla.org/integration/autoland
task_id: IjPn73ykRCiPa5s2s7Qn4w