Simvision hangs when dragging signals in waveform window while using VPN

When accessing simvision via VPN, when I try to drag and drop a signal in the waveform window the application gets hung up.  If I go to the mouse connected directly to the workstation I can complete the drag and drop using a middle button click, but I'm unable to complete using the mouse connected to the system from which I'm accessing simvision via VPN.  When this happens I am unable to do anything on the workstation remotely and must complete the operation on the workstation itself.

Has anyone seen this and (other not dragging and dropping a signal) how can it be corrected remotely?  Thanks!  Mark