I also ran into the same issue. I found the “Trusted Domains” exception would work for a hostname, but wouldn’t work for an IP Address. So to work around the problem, I created DNS entries for those devices I used to only access via IP, and then excluded the those new DNS names. For example, if your firewall is 192.168.1.1, I created a DNS entry for “firewall.domain.com” that pointed to 192.168.1.1. Then added “firewall.domain.com” to the “Trusted Domain” exception list.