CRS Switch ACL egress DST Port Matching

We are running RouterOS v6.34 on CRS212 and CRS226.

We created a Switch ACL route on egress, to filter out Multicast Traffic on certain ports. The rule works well when no DST port is selected, and blocks the correct traffic on the correct VLAN. But, when the DST Port is selected, nothing happens and the traffic keeps on flowing through.

Are we doing anything wrong?

Thanks.