Chrome Version: Version 65.0.3325.181 (Official Build) (64-bit)
OS: Win10 1709 (16299.309)

What steps will reproduce the problem?
(1) https://jsfiddle.net/qy78w5ga/
(2) Put focus in one of the subscrollers with "none" or "contain"
(3) Scroll using the arrow keys, page up/down, home/end

What is the expected result?
Scrolling is limited to the subscroller, and never scrolls the body (until focus is moved to the body)

What happens instead?
After reaching the end of the scroller, the body is scrolled