UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.116 Safari/537.36

Steps to reproduce the problem:
1. Go to chrome://flags/#smooth-scrolling and select "Disabled"
2. Relaunch browser
3. Navigate to a long page and scroll

What is the expected behavior?
Scrolling will occur precisely, with one-to-one mapping to movement on the touchpad.

What went wrong?
Scrolling occurs in discrete steps, as would happen when using a mouse wheel.

Did this work before? Yes Between versions 49 and 51 inclusive.

Chrome version: 53.0.2785.116  Channel: stable
OS Version: 
Flash Version: Shockwave Flash 23.0 r0

Chrome 49 introduced precise touchpad scrolling for my environment. However it seems this support has now been removed.

I have re-tested with Chrome 48 (no precise scrolling), 49 & 51 (precise scrolling works), and 52 & 53 (no precise scrolling again). These tests were run without changing anything else in my operating system in between.

To be clear, I'm not referring to the chrome://flags/#smooth-scrolling=true behaviour; but rather, what happens when this flag is false.

I'm running Lubuntu 15.10, LXDE, Openbox.