The mouse wheel behaviour in the 4.1 version of the ArcGIS JS API is causing problems with maps on scrollable pages, see Scrolling down a page with a map from here and a question on esri.com. I thought I'd disable zoom by mouse wheel altogether until this is fixed, but I can't find how.
For 3.18 this should be possible using the disableScrollWheelZoom() method, but this isn't supported in 4.1. Does anyone know the 4.1 equivalent?