abhilashkr31@ -- Thanks for reporting this issue. Tested on One Plus 3T Android 9.0.0 Build/OPR6.170623.013 and was not able to reproduce the issue by following the below steps:

1. Launch Chrome.
2. Navigate to www.youtube.com.
3. Tap on any of the video.
4. While the video is loading, tap on device back button.
5. Observed that voice of the video is not observed any more.

Please let us know if you had followed any prerequisites or if we have missed anything. Could you also please share logs of the issue.

Thanks in advance!

Hi,

I don't have the logs. But I have attached the video in the mail. Can you
see the video I shared?

Thanks
Kumar Abhilash

Thank you for providing more feedback. Adding the requester to the cc list.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

abhilashkr31@ -- Thanks for the reply. Have referred the video while performing the test while updating the C#2. Could you please try by Disabling and Enabling Chrome by navigating to Device Settings >> Apps & notifications >> Chrome and let us know your observations. If the issue is still observed please collect and share the logs while the issue is being reproduced.

Thanks!

Hi there,
I am not able to find the settings you are referring to. Can you share in a
little more detail.
Plus I checked on my friend's Moto G phone. The issue can be replicated on
that too.

Thanks,
I will share the logs. Just send me the right steps.

Thanks,
Kumar Abhilash

Thank you for providing more feedback. Adding the requester to the cc list.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Tested the issue in Android and able to reproduce the issue. Similar behavior is observed since Chrome M-55.

Steps Followed:
1. Launched the Chrome Browser.
2. Navigate to the URL: m.youtube.com
3. Top on any of the video.
4. Before the video starts playing, tap on device back button.
5. Observed that, though the user is redirected to the previous screen audio seems to play in the background. 

Issue seems to be reproduced very inconsistently. 

Chrome versions tested:
55.0.2883.91, 65.0.3325.109(Stable), 67.0.3381.0(Canary)

OS:
Android 7.1.2

Android Devices:
Nexus 6P

This seems to be a Non-Regression issue as same behavior is seen since M55.  Untriaged for further input's on this issue.

Please navigate to below link for log's and screen cast--
go/chrome-androidlogs/824828

Thanks!

this seems more like a YouTube bug. can you open bug in https://b.corp.google.com/issues/new?component=28054&template=55402

Hi There,

I don't work in google, and not able to create the bug report there?
Can you help me more?

Hi - Bug report is not required any more. Please refer Comment #9.

I mean I am not able to report the problem on that link you sent. May be it
needs someone from Google. I am an outsider actually.