Visual Bugs in the UI?

Yes, I forgot to mention the rule works as intended, the traffic is allowed, visually you wouldn't expect it though -- which creates two concerns:

Unless you remember, you'll ask yourself, why is VLANx missing from the rule (potentially causing IT staff to pull their hair out on a red herring) and auditors are likely to give organizations grief over it.

I connected a physical phone, and it functions as expected on the VLAN in the screenshot. While it indicates VLAN23 for the applicable subnet (which is correct), the rule contains VLAN20 as the supernet for all VoIP VLANs. That is to say I'm expecting to see the LAN and VLAN20 supernets displayed in the rule.

As I mentioned in my prior note, the block rule for extraneous traffic that should not be allowed on those VLANs have the same visual bug. The rules work, the UI misleads.