Chrome Version: 69.0.3448.0
OS: Android 8.1 / Pixel 2 XL

What steps will reproduce the problem?
(1) Pair bluetooth headphones
(2) Play music (e.g. from Google Play Music)
(3) Visit a site with an ad featuring autoplay (ex: http://www.espn.com/nhl/story/_/id/23694017/2018-stanley-cup-final-vegas-golden-knights-luck-run-nhl) and scroll until the ad is rendered (this is key)

What is the expected result?
Ad and corresponding audio do not play

What happens instead?
Ad video plays; no ad audio is played, but it pauses music / content.

This is really frustrating when it occurs, you have to explicitly resume playback on your own media repeatedly.  I've attached a screenshot of one of the offending ads.

Additionally, I know it's not just me; the following Play Store review for M67 stable has ~450 upvotes:

""" It's absolutely infuriating to have my music or podcasts muted while 
browsing due to autoplay. I turned off autoplay in settings and 
chrome://flags, yet videos on sites like CNN and ESPN still autoplay. 
Goodbye Chrome, hello Firefox. (Strongly recommend Firefox for anyone else 
who can't stand autoplay) """
 

Deleted: autoplay.png 1.3 MB

	autoplay.png 1.3 MB View Download

Chrome Version: 69.0.3448.0
OS: Android 8.1 / Pixel 2 XL

What steps will reproduce the problem?
(1) Pair bluetooth headphones
(2) Play music (e.g. from Google Play Music)
(3) Visit a site with an ad featuring autoplay (ex: http://www.espn.com/nhl/story/_/id/23694017/2018-stanley-cup-final-vegas-golden-knights-luck-run-nhl) and scroll until the ad is rendered (this is key)

What is the expected result?
Ad and corresponding audio do not play

What happens instead?
Ad video plays; no ad audio is played, but it pauses whatever else you were listening to in the background (in the repro steps above, Google Play Music).

This is really frustrating when it occurs, you have to explicitly resume playback on your own media repeatedly.  I've attached a screenshot of one of the offending ads.

Additionally, I know it's not just me; the following Play Store review for M67 stable has ~450 upvotes:

""" It's absolutely infuriating to have my music or podcasts muted while 
browsing due to autoplay. I turned off autoplay in settings and 
chrome://flags, yet videos on sites like CNN and ESPN still autoplay. 
Goodbye Chrome, hello Firefox. (Strongly recommend Firefox for anyone else 
who can't stand autoplay) """
 

Deleted: autoplay.png 1.3 MB

	autoplay.png 1.3 MB View Download