Ambix track doesnt work when sent to 5.1 channel output


In cubase 10, i was trying to use a B-format ambix audio. when the routing is directed to stereo group/output or a ambix group/output its working. when the same is directed to any 5.1 group/output there is no audio being processed.

Also Ambix panner is not working. I dint see any update in audio when parameters are modified.

Hi Guys,
Any suggestions here?