I've been trying with both the latest unity LTS and third person controller (I tried first person shooter. The same problem there.).
I've had this issue in build.
I also tried your build, Justin. And the same.
Then I plugged in my old keyboard (have done some messing with cables), reloaded the PC, and unloaded all background software.
And it was all OK.
After some restarts and playing with software and cables I've found out that the issue is in my old wireless gamepad (Logitech RumblePad 2). If I plug the receiver, then this issue appears.
I'm not sure if this happened on previous versions of UCC. I connected it just a few days ago.
Oh, and I didn't see any problems with games. Didn't play many though.