Website match rules and your own equivalent domains

Each website on a login now has a Fill on rule: this site and its subdomains, this exact host, pages under this address, a regular expression, or never. The rule applies when suggesting and again when filling.

Settings → Equivalent domains adds your own groups of sites that share one sign-in and turns built-in groups off. Public suffixes such as co.uk are refused. The list is encrypted in your vault and follows your account. See Autofill.