Traffic Shaping is executing Default Queue despite Rules are set correctly

[tiger1986sg]

I have a WAN-LAN bridged filtering setup. I have the Traffic Shaping up working properly. I did FTP and HTTP transfer tests and the traffic is being shaped as per expected. However something is different when it has been placed onto production use.

In the production environment:
I'm starting to see 50% of my traffic going through default queue (qwandef) instead of according to the rules defined. I have even tried setting the rules to match everything regardless of protocol or IP or port (Setting all of them to ANY). However the result still remains the same where 50% of the traffic goes to default.

Please advice to the above problem. Thanks!