Strange VLAN Routing Issue

Hi All - 

I have an issue that I'm hoping will be simple.

I have 2 VLANs and I'm able to ping and view devices on the 2nd VLAN without specifically allowing the traffic with a firewall rule.  How is this possible?  If I run a trace route from the first VLAN to the 2nd I can see that the traffic is hitting the UTM interface first and I only have layer 2 switches is use.  What am I missing?

I even setup a deny rule and moved it to the top of the list and traffic is still allowed.

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