On the "Connection Options" tab of the session request. Untick "Use Default Connection Options", and change the "Mouse Motion" default from "Send" to "Do not send". Mouse scrolling should then work in all applications.
However, this option will stop the mouse wheel clicking option from working, and OnMouse events will not work
Enhancement request number BFER 7776 has been submitted to Development for consideration in a future release of TPAM