WAN access problem after upgrade 2.4.2

[deknoy]

I have WAN access problem after upgrade to 2.4.2. In my system have 2 WAN with squid transparent proxy. Before upgrade I can access both WAN from outside but after upgrade I can access ONLY 1 WAN(default gateway) and port forward in both WAN port still working. How can I fixed it? if me wrong please suggest me. Thank you.