I have a Logitech mouse (Performance MX) with SetPoint installed. SetPoint installs a Chrome extension for "Smooth Scrolling" that seems to interfere with your plugin. I had to disable the "Logitech SetPoint Smooth Scrolling" extension in Chrome and reload the page in order to get things working.
From SetPoint:
- Control Center version: 6.51.8
- Driver version: 5.50.98
From Chrome:
- Logitech SetPoint 6.51.8 - "Smooth scrolling for Logitech mice."