[sudo-discuss] Help! My computer is autoscrolling right (and other strange phenomena) and I don't know why!

I have a fun riddle (it's actually a computer problem please help). As of this evening, I think my toddler did something to my computer, and now I'm experiencing the following: - All windows that have a left-right scroll bar scroll to the right continuously whenever the mouse is over the field (even if another window is active) - This usually only occurs if the mouse is stationary. If it’s moving at all, it doesn’t happen. - The effect occurs in Google Spreadsheets in Firefox and Chrome, in a file browser and Libre Office Spreadsheet. - The effect occurs regardless of mouse motion in Firefox. - If I hover over the tabs in firefox it shifts over to the next tab to the right until it gets to the right-most place - The effect doesn’t occur if the mouse is moving - It doesn’t occur in Firefox - It moves at about 2-3 tabs per second - If I press “ctrl” in Firefox the browser zooms out. - The effect doesn’t occur in Chrome - I can’t drag windows. The cursor turns into a hand, but then turns back into a cursor within a fraction of a second. Sometimes I can move the page in little steps before it happens. - I can’t resize windows. The cursor changes into a drag emblem, and it doesn’t change back, but moving the page does nothing. - I can still drag objects on the desktop. - I can still click and drag to highlight things. The effect appears specific to window manipulation - If I hover over a dropdown in the Linux settings settings menus, it scrolls. I tried switching mouses and keyboards, so it doesn't appear to be a hardware issue. I think it's some kind of weird mobility or accessibility feature, or maybe two interacting in a weird way. I'm using Linux Mint. Can anyone figure out what the hell is going on and how to fix it? *Andrew R Gross, (he/him)* 412.657.5332 - shrad.org <http://www.shrad.org>