[ygra]

I remember getting accurate values from the scroll wheel being the worst in Firefox and basically impossible. You could only get the scroll direction, but not the correct extent (bascially everything just looked like one detent). So you either get incredibly fast scrolling, or incrediby slow scrolling, depending on how you work with the value and whether you still do the oft-needed division by 120. This can also make some touch pads that generate mouse wheel events very unusable for zooming or scrolling.

You can see the difference in the example on MDN as well: https://developer.mozilla.org/en-US/docs/Web/API/Element/whe...

The scaling there works with very different speeds in Firefox and Chrome because both disagree on what value the delta should have. Scrolling up once yields -100 in Edgeium for me and -3 in Firefox.