EX-4300MP Multicast through Virtual Chassis

Greetings everyone,

I am experiencing an issue on EX-4300MP series switches. When I configure them in virtual chassis and enable IGMP snooping, it does not seem to pass multicast traffic through the VC. I have a pretty basic config loaded on this with only:

igmp-snooping {
     vlan default {
          query-interval 30;
          l2-querier {
               source-address <ip of switch>;
          }
     }
}

Tried on different firmware:

18.4R2-S3

19.4R2-S1

Is anyone else experiencing this behaviour? Did I miss some multicast configuration necessary for VC?

Help would be greatly appreciated.

Thanks,

ME