And for Windows people, there's a PowerToys thing where double clicking control highlights it.
Worth noting that on some setups the cursor can straight up disappear until it's moved. It's not even just that you're dumb and can't see it, it often gets hidden by certain types of content.
Huh. I don't think it's come up in a game for me, but maybe I just don't use that input enough for those. You can remap it, anyway (including to the mouse shake thing, if that's your bag).