Looks like bug 1599368 wants to change this `Null` principal to `openTrustedLinkIn`, which uses `System` principal to support SameSite cookies. To not regress this bug, I would guess we need to do explicit protocol / url checks instead of relying on the principal?
Bug 1433707 Comment 19 Edit History
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Looks like bug 1599368 wants to change this `Null` principal to `openTrustedLinkIn`, which uses `System` principal, to support SameSite cookies. To not regress this bug, I would guess we need to do explicit protocol / url checks instead of relying on the principal?