CRS-125: Tagged vlans work without egress-vlan-tag set?

/interface vlan
add interface=ether2-master name=vlan6 vlan-id=6
/interface ethernet switch vlan
add ports=ether2-master vlan-id=6

This successfully gets a dhcp lease on that vlan and tags traffic out of that switchport anyway

Flags: X - disabled, I - invalid, D - dynamic
 #   ADDRESS            NETWORK         INTERFACE
 0 D 192.168.200.70/24  192.168.200.0   vlan6

From what I understand this shouldn’t work without me first setting egress-vlan-tag???

I’m using RouterOS 6.34 on a CRS-125-24G-15-2HnD-IN