Recently, holding shift and scrolling is only scrolling up and down as opposed to side to side. I could have sworn that this was working last time I logged on, a couple weeks ago, but it isn't anymore. After some searching, I found some posts from a couple years ago saying that their sideways scrolling (shift + scroll) wasn't working, so I know that the shift + scroll is supposed to scroll horizontally unless I've massively misunderstood everything I've found. That means, if I'm correct, it's not an issue of me trying to use a hotkey or shortcut that does not exist, like pressing ctrl + y on Photoshop to try and undo something. I've tried using right mouse to pan instead, which totally works, but it feels kinda slippery and I'd rather just scroll. If it makes any difference, I am using Firefox.
