I noticed a very annoying bug that I never experienced in arma 1 or 2. When I bring up the action menu (middle mouse button) and try to scroll down or up the options, instead of scrolling down or up, the menu tab changes. In otder to switch between options I have to press the "[" and "]" keys manualy, before it was easier with the middle mouse button.

A good example is in the tanks. Whenever I want to switch between round types, or switch to the gunner seat I cant use the middle mouse scroll button. Any advice would be appreciated.

Did you check the control bindings in the controls menu? Mine works fine.

Im gonna check tonight if anything is there. I did try to find the binding last time I played, I might of overlooked it. I was also dissapointed on how hardly anyone plays this online