Help! Dock wont scroll through icons when hovering with mouse.

Hello everyone. I’m having a problem on one of my Mac’s where when you take the mouse pointer and hover over the icons in the dock, they won’t scroll. If I start from the left at finder and scroll to the right, finder is the one still highlighted. I have to move the mouse directly above the app I wanna use and move down to select it. It used to highlight and magnify each icon as I scrolled to through the dock. I tried the terminal killall dock command and all that did was erase and reset the doc to default. I’m on the latest Mac OS on a m1 Mac mini. Any ideas for a fix?