Thunderbolt Port and Wireless Mouse/Keyboard

I discovered that the screensaver will not ever time out and go active when the dongle is attached to a 4 port hub on the Thunderbolt port.

Moving it to a regular 3.0 4 port hub - screensaver runs as expected.

Somehow it sees either a mouse tic or a key pressed when it is on the thunderbolt port.

My 2 cents.