Yes, it just seems to be with Windows RDP only as far as I can tell. I have used several other non-Windows RATs without (noticing) this happening. No biggie. As usual, I find other (non-Windows) utilities to be either more useful and/or less problematic.
For instance, there is some screen oddness with "Windows" Remote Invite on the remote host computer...
I can see their screen and their firewall (Kerio PF) prompt them to allow control access (allow, deny, etc.), they do not see these prompts on their screen, and while I can see their screen and these prompts I do not yet have mouse or keyboard control. Very messy to deal with. For now I'll stick with UltraVNC, UltraVNC SC, RemoteAnything, LogMeIn, etc.
Thank you for your response. I'll not worry about it. If I try working with Windows Remote Invititation again and notice registry changes or other that might account for the blushing M I'll post back here.
It might be good and useful to know remote access has occurred!
Scott