CCR2216-1G-12XS-2XQ connected via QSFP28 port and XQ+DA0003 (at 40gb) to CRS326-24S+2Q+ QSFP works perfectly on 7.17.2
After upgrading the CCR2216-1G-12XS-2XQ to 7.18.2 can’t ping anything connected through QSFP28 ports including the CRS326-24S+2Q+ switch directly connected. The QSFP28 port shows that it’s linked.
Downgrading to 7.17.2 resolves the issue. I don’t have a spare CCR2216-1G-12XS-2XQ to do troubleshooting with 
I did try disabling vlan-filtering but that made no difference. SFP ports work fine, just QSFP28 seems to be affected.
I’ve sent support a message but haven’t heard back. Has anyone else seen this issue?
Some relevant config:
/interface bridge
add name=LAN priority=0x6000 vlan-filtering=yes
/interface ethernet
set [ find default-name=qsfp28-1-1 ] auto-negotiation=no speed=40G-baseCR4
set [ find default-name=qsfp28-2-1 ] auto-negotiation=no speed=40G-baseCR4
/interface ethernet switch
set 0 mirror-target=sfp28-3
/interface ethernet switch port
set 0 l3-hw-offloading=no limit-unknown-multicasts=yes mirror-egress=yes mirror-ingress=yes storm-rate=5
set 1 l3-hw-offloading=no limit-unknown-multicasts=yes mirror-egress=yes mirror-ingress=yes storm-rate=5
/interface bridge port
add bridge=LAN interface=qsfp28-1-1
add bridge=LAN interface=qsfp28-2-1
/ip address
add address=10.1.1.1/16 interface=LAN network=10.1.0.0