The first "final" chart pans and zooms wrong. It appears that it pans roughly half the distance that I move the mouse and scrolling to zoom zooms on a point that isn't the mouse.
However the d3fc-zoom chart near the bottom works perfectly.
they all work fine for me.
Thanks for the feedback. Depending upon the devicePixelRatio, interactions with the first chart would misbehave. I've just pushed a fix to the code, and updated the post, which should rattle through the various CDNs before too long.
these all worked for me; I didn't understand the difference between the native version and the new component.