Tbh this is an odd one
before I reinstalled, I could roll skills on my mouse wheel, my mouse button 3 was another way to press "alt" but, the real kicker, was my mouse button 4 was a TOGGLED SPRINT.. I had to reinstall due to accidental corrupting between switching from d2 to median so much and havent had it working since
the toggle sprint was nice for my bowazon :/