Chrome Version: 73.0.3645.0 (Official Build) b2e486f0d5a83d34bd6bdd72ebbe2005063a8133-refs/branch-heads/3645@{#1}(32/64 Bit)

OS: Windows(7,8,8.1,10), Mac(10.13.1, 10.13.6, 10.14.2), Linux(14.04 LTS).

Test URL: https://mounirlamouri.github.io/sandbox/media/dynamic-controls.html

What steps will reproduce the problem?
1. Launch chrome, navigate to the above test url.
2. Now, Mute the video using volume slider by dragging it to LHS.
3. Click on Volume button and observe.

Actual Result: Unable to unmute the video after clicking on Volume icon.
Expected Result: Should be able to unmute/mute the video.

This is a regression issue, broken in M-71 series, and below is the per-revision bisect info:

Good Build: 71.0.3562.0.(Revision: 594164)
Bad Build: 71.0.3563.0(Revision: 594642)

You are probably looking for a change made after 594611 (known good), but no later than 594612 (first known bad).

CHANGE LOG URL:

The script might not always return single CL as suspect as some perf builds might get missing due to failure.

https://chromium.googlesource.com/chromium/src/+log/4e256bfc6ebc191fa82ac64a28bf67e4ead1ffed..77b8b6feb5418be0461ec0fe25863d854d663b24

Suspect: https://chromium.googlesource.com/chromium/src/+/77b8b6feb5418be0461ec0fe25863d854d663b24

steimel: Could you please check whether this is caused with respect to your change, if not please help us in assigning it to the right owner.

Note:
1. Issue is also seen on Stable #71.0.3578.98, Beta #72.0.3626.28 and Dev #73.0.3642.0 builds.

Kindly refer the screen cast for reference

Thank You!
 

Deleted: Actual Result.mp4 265 KB

	Actual Result.mp4 265 KB View Download

Deleted: Expected Result.mp4 233 KB

	Expected Result.mp4 233 KB View Download