Turned off my ad blocker and, lo and behold, normal scrolling worked (perhaps it had been hanging on the cookies-related box at the bottom, which didn't appear

Turned off my ad blocker and, lo and behold, normal scrolling worked (perhaps it had been hanging on the cookies-related box at the bottom, which didn't appear with ad-blocking on). With the ad blocker, I could scroll only by grabbing the scrollbar; mouse-wheel, PageUp/PageDown, etc. didn't work. Haven't seen this behavior anywhere else lately.