Hi James, thanks for responding.
I used a different mouse, model number P58-00027S, with my computer and mouse wheel works with Boundless. I then tried my old mouse, model number 4EH-00004 (which works with all my other games / Windows apps), and mouse wheel does not work.
Both models are Microsoft mice and both mice used the same driver. I took screen captures of the drivers before and after swapping out mice and both drivers are identical. Here is screen capture of driver:
I’ll end up using the new mouse as mine is pretty old and the mouse wheel has no more “tread”. I didn’t realize it because the mouse still works but now that I felt some tread I can’t go back. It would be nice to know why a basic Microsoft mouse using same driver had an issue with Boundless while all other apps/games worked fine.
I’ll test my old mouse on my sons computer tomorrow, his computer is off right now, and let you know what happens.