Cookie named 'id' prevents Edit form fields being set properly
If you have a cookie set with a name 'id' (any value), and you try to edit something, e.g. a firewall rule, the form fields are not properly filled in on the page - they seem to be set to the default values you'd get if you were creating a new rule.
(I have found this occurs in the wild, if you have a ports forwarded for both pfSense and a Synology NAS, and you log into both through the same hostname.)
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