It looks like a as very familiar story for me..FF aircraft? I still don't have easy answer what can cause this scenario...but cabin sensors and its inlet ducting,including hose upstream of sensor housing are only mentioned in relevant troubleshooting procedure (Actual Zone Temperatures are above Selected Zone Temperatures (In Flight)). If is high temp limited to cabin and normal in flight deck blockage in sensor inlet ducts can be root cause. Monitoring of zone trim valves position and pack output in flight and comparsion with normal A/C can be very helpful for next steps. I wish quick-effective solution and would like to know the outcome.