UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36

Steps to reproduce the problem:
1. Open any web page (ideally one that can already scroll)
2. Attempt to scroll past the top of the page
3. Try selecting text or clicking on page elements

What is the expected behavior?
Scrolling should stop at the top of the page, and the scrollbar should stop moving. (On Mac, it should "bounce".)

When interacting with page elements, clicking should interact with elements directly beneath the mouse.

What went wrong?
Scrolling does not bounce at the top of the page, the page jitters, and the scrollbar keeps shrinking.

When interacting with page elements, clicking and dragging happens at a position offset from the mouse, as if the page had kept scrolling.

Did this work before? Yes Yesterday, which was probably Chrome 53

Chrome version: 54.0.2832.0  Channel: canary
OS Version: OS X 10.11.5
Flash Version: Shockwave Flash 23.0 r0

See video of the issue at https://youtu.be/jodkyeWOmNY

I was unable to repro on Windows.