Chrome Version: 69.0.3466.0 (Official Build) 7a22a4a62948746c970b84f31b1f78cd2cb3a1c2-refs/branch-heads/3466@{#1} (32/64 bit)
OS: Windows 10 (Touch device)

What steps will reproduce the problem?
(1) Launch chrome, open Task Manager and end all GPU processes till it is present.
(2) Now try to Minimize/Maximize/Close the browser using Tap Touch and Observe.

Actual Result: Minimize, Maximize and Close button of browser become unresponsive on Tap Touch. 
Expected Result: Minimize, Maximize and Close button of browser should respond on Tap Touch.

This is a regression issue, broken in 'M-68' series and providing the bisect info below:
Good Build: 68.0.3436.0 (Revision: 560158)
Bad Build:  68.0.3437.0 (Revision: 560453)

Unable to provide per revision bisect, hence providing narrow bisect.

Narrow bisect URL:

https://chromium.googlesource.com/chromium/src/+log/7437045138faa8fb24b881a4a125555e775f8b2c..ff828877e7dd93fb123bc4d6539d93a2187334dd?pretty=fuller&n=10000

Suspect: r560353?

@bsep: 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 Windows 10 Touch specific and it is not seen on Click event.
2) Issue is not seen on Linux (14.04 LTS) and Mac (10.12.6, 10.13.1, 10.13.5, 10.13.6) OS.
3) Issue is also seen on M-69 Dev (build #69.0.3464.0).
4) This issue cannot be reproduced on M-68 Beta (build #68.0.3440.33) as Minimize/Maximize/Close buttons are already unresponsive on fresh launch.

Kindly refer the attached screencast.

Thank You..!!

 

Deleted: Actual Video.mp4 528 KB

	Actual Video.mp4 528 KB View Download

Deleted: Expected Video.mp4 972 KB

	Expected Video.mp4 972 KB View Download