Normally, scrolling using the mouse wheel works fine for me. However, if I let the browser sit for a few minutes (not sure exactly how long), there is an annoying delay between using the mouse wheel and the scrolling action.
This might sound trivial, but it causes a mental jolt because the physical action isn’t matching the screen action. That often causes me to overscroll and then need to scroll back. Annoying.
This may be a duplicate of some other bug reports - it’s hard to tell from the descriptions.