We've uccx agent that encounter when issue with CAD software stalls for a while when the agent hang up the call. the CAD windows will eventually become white and no element displayed.
The agents are located at branch office, and UCCX server is located in HQ. However some agents located at HQ office also reported the same behaviour occasionally. The UCCX version is 18.104.22.16804-12
Anyone encounter similiar issue before and suggestion on how to troubleshooting this is very much appreciated.