Stuttery scrolling in Chrome with `VirtualScroll`

I just noticed that the VirtualScroll element has stuttery scrolling in Chrome. Here’s a video: http://jlongster.com/s/chrome-stutter.mp4

I’m wrapping it in AutoSizer fwiw, but I don’t see how that could be related. Don’t worry much about the code (it’s ClojureScript), the rows it’s rendering is pretty basic: just a row of inputs with values. I don’t know if anyone else has seen this (I’m using latest master of react-virtualized) and Chrome 48.

I can try to make a reduced test case later, just thought I’d post this now.

[SpencerCDixon]

Awesome, makes total sense. Thank you!

[jlongster]

@bvaughn I figured it out. On master the _onWheel handler was removed from the container element, and previously both _onWheel and _onScroll events were firing and I think twice as much work was happening. Now that it was removed, Chrome is a lot smoother. I can replicate this on the old code by just commenting on the onWheel: this._onWheel line.

So good job removing that 😃