UserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.49 Safari/537.36

Example URL:
https://en.wikipedia.org/wiki/Battle_of_Long_Tan#Battle

Steps to reproduce the problem:
1. New person (profile)
2. Open  https://en.wikipedia.org/wiki/Battle_of_Long_Tan#Battle
3. Click on the image on the right, there should be a media viewer showing the image
4. Close the said media viewer by pressing Esc or click X on the corner

What is the expected behavior?
The page should maintain its scroll position after exiting media viewer

What went wrong?
It doesn't. It jumps to the very top of that page.

Does it occur on multiple sites: Yes

Is it a problem with a plugin? No 

Did this work before? Yes 59

Does this work in other browsers? Yes

Chrome version: 62.0.3189.0  Channel: canary
OS Version: 10.0
Flash Version: Shockwave Flash 26.0 r0

Chrome 61+ is the only browser so far that I can reproduce this bug. 

I haven't narrowed the regression window yet, so not sure about 60. But I personally tested with 55.0.2870.0 it works fine. Other people reported that it works fine in 59 too.