Mwan3+nat offload

Hi! I'm running OpenWrt 18.06.1 r7258-5eb055306 on EdgeRouter lite (Octeon+ V0.1). After recent upgrade from LEDE 17 to Openwrt 18.06 with both hw\sw nat offload and mwan3 rules I have issues with SIP, jabber traffic.
Using tcpdump I can see that there is no outgoing SIP traffic on wan interface. When mwan disabled there is traffic and sipphone can connect, same with jabber. LAN Interfaces which are fully routed by mwan and traffic nated to WAN (masquarade) is not working.
I can't do additional research as router is being used in our office daily but perhaps I'll try on weekend.

root@gw1:~# cat /etc/config/mwan3

config rule 'Tlgrm_toUFO'
        option sticky '0'
        option ipset 'telegram'
        option proto 'all'
        option use_policy 'UFO_only'

config rule 'WLAN_to_WAN'
        option src_ip '192.168.23.0/24'
        option proto 'all'
        option use_policy 'Beeline_only'

config rule 'Zhurmash_to_WAN'
        option proto 'all'
        option sticky '0'
        option use_policy 'Beeline_only'
        option src_ip '192.168.80.0/24'

config rule 'upds_Bee_only'
        option proto 'all'
        option sticky '0'
        option ipset 'updates'
        option use_policy 'Beeline_only'

config rule 'libVPN_Bee_only'
        option dest_ip '107.182.132.173'
        option dest_port '5743'
        option proto 'udp'
        option use_policy 'Beeline_only'

config rule 'DNS_toUFO'
        option dest_port '53'
        option proto 'udp'
        option sticky '0'
        option use_policy 'UFO_only'

config rule 'pbxes3_Bee_only'
        option dest_ip '88.198.69.250/32'
        option proto 'all'
        option use_policy 'Beeline_only'

config rule 'pbxes_Bee_only'
        option dest_ip '144.76.38.78'
        option proto 'all'
        option use_policy 'Beeline_only'

config rule 'web_toUFO'
        option dest_port '80,8080,443'
        option proto 'tcp'
        option sticky '0'
        option use_policy 'UFO_only'