Chrome Version: 53.0.2776.0 07025e9df358bb0249550d6124b9817333421fc0-refs/heads/master@{#401299} (32/64 bit)
OS: Windows (7,8,8.1,10),Mac OS X(10.10.5, 10.11.4)
 
What steps will reproduce the problem?
1. Launch Chrome and navigate to chrome://md-settings/advanced
2. Click on settings icon under Languages and observe the page

Actual : Weird behavior is seen on opening/closing language settings overlay
Expected : No such behavior should be seen on opening/closing language settings overlay

This is a regression issue, broken in 'M-53', below is manual bisect and Narrow bisect info :
Good Build: 53.0.2774.3
Bad Build: 53.0.2776.0

Narrow Bisect:
https://chromium.googlesource.com/chromium/src/+log/465606b75e06e443318a8bcaee8ee8226643eeb6..a69c79a742baf63c5a1a43edd6984c430b47c07b?pretty=fuller&n=100

Suspecting: r401192 from Narrow bisect

@dpapad : Could you please help to reassign if your change is not the cause for this change.

Note : Will soon update Linux info.
 

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	Actual_video.mp4 441 KB View Download

Deleted: Expected_video.mp4 423 KB

	Expected_video.mp4 423 KB View Download