UserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.113 Safari/537.36

Steps to reproduce the problem:
1. Go to https://developer.mozilla.org/en-US/docs/Web/CSS/text-overflow
2. Search for "spaceship"

What is the expected behavior?
Either:
- Find "0 of 0" hits (not preferred)

Or:
- Find "4 of 4" hits
- Have a visual indicator on the scrollbar
- Have a visual indicator in the corresponding element

What went wrong?
- Find "4 of 4" hits
- Have no visual indicator on the scrollbar
- Have no visual indicator in the corresponding element

Did this work before? N/A 

Chrome version: 60.0.3112.113  Channel: stable
OS Version: 10.0
Flash Version: Shockwave Flash 26.0 r0

So I guess this is two bugs.
1. The scroll-bar indicator is missing, while in other cases of hidden text, it is visible, such as here:
https://bugs.chromium.org/u/droger@chromium.org/updates
(search for "disappeared", you will get a scrollbar highlight)

2. There is no visual indication on the web page where the hit is. What about changing the background color of the element that contains the invisible text?