Chrome Version:70.0.3538.38 (Official Build) 0e080dc98bc41db12157d14a92b48e55e18b1b41-refs/branch-heads/3538@{#723}(32/64-bit)
OS: Windows(7,8,8.1,10) ,Mac(10.12.6 , 10.13.1 , 10.13.6 , 10.14) and Linux(14.04 LTS)

What steps will reproduce the problem?
1) Launch chrome, open DevTools and go to 'Element' section.
(2) Now Drag "Styles" window to RHS and observe.

Actual Result: Horizontal scrollbar is not seen after dragging devtools window to RHS.
Expected Result: Horizontal scrollbar should be seen after dragging devtools window to RHS.

This is regression issue broken in ‘M-69’ and providing the bisect info below:
Good Build: 69.0.3451.0 (Revision: 564769)
Bad Build:  69.0.3452.0 (Revision: 565143)

You are probably looking for a change made after 564825 (known good), but no later than 564826 (first known bad).

CHANGELOG 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/2045134020610ddc664eb41700d2f8b959b192c4..4f8f44f272473dfd92257e18dbe86fdf48d61884

Suspect: https://chromium.googlesource.com/chromium/src/+/4f8f44f272473dfd92257e18dbe86fdf48d61884

@rego: 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: Issue is also seen on latest dev build#71.0.3559.6 and canary build#71.0.3563.0

Kindly refer attached screen cast.

Thank You..!!
 

Deleted: Actaul Result.mp4 727 KB

	Actaul Result.mp4 727 KB View Download

Deleted: Expected Result.mp4 709 KB

	Expected Result.mp4 709 KB View Download