Using the per-revision bisect providing the bisect results,
Good build: 57.0.2978.0 (Revision: 442756).
Bad build: 57.0.2979.0 (Revision: 443120).

You are probably looking for a change made after 443047 (known good), but no later than 443048 (first known bad).
CHANGELOG URL:
  https://chromium.googlesource.com/chromium/src/+log/57b7617e61e86c83be5819ef826093cafa868f73..b3cc3c0f613ff302f4833781a388e2ad8646f079

@alph -- Could you please look into the issue, pardon me if it has nothing to do with your changes and if possible please assign it to concern owner.
Adding RB Label as this is a recent Regression. Please remove if this is not required.
Thank You.

alph@ Since this issue is marked as RB-Stable and observed in latest canary #58.0.2996.0
Can we get any latest update on this issue?

Thanks!

Able to reproduce this issue on Ubuntu 14.04 using chrome latest Dev M55-58.0.3000.4

alph@ Ping! Could you please let us know is there any latest update available on this issue?

Thanks!

A friendly reminder that M57 Stable is launch is coming soon! Your bug is labelled as Stable ReleaseBlock, pls make sure to land the fix and get it merged into the release branch ASAP so it gets enough baking time in Beta (before Stable promotion). Thank you!

 Issue 688325  has been merged into this issue.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/cd03f64dcc04f08e8ed35b058fe92bba1bd9abb1

commit cd03f64dcc04f08e8ed35b058fe92bba1bd9abb1
Author: alph <alph@chromium.org>
Date: Fri Feb 10 00:42:42 2017

DevTools: Fix toolbar layout glitches on memory panel

BUG= 681467 

Review-Url: https://codereview.chromium.org/2682123004
Cr-Commit-Position: refs/heads/master@{#449493}

[modify] https://crrev.com/cd03f64dcc04f08e8ed35b058fe92bba1bd9abb1/third_party/WebKit/Source/devtools/front_end/profiler/ProfilesPanel.js
[modify] https://crrev.com/cd03f64dcc04f08e8ed35b058fe92bba1bd9abb1/third_party/WebKit/Source/devtools/front_end/profiler/profilesPanel.css

Your change meets the bar and is auto-approved for M57. Please go ahead and merge the CL to branch 2987 manually. Please contact milestone owner if you have questions.
Owners: amineer@(clank), cmasso@(bling), ketakid@(cros), govind@(desktop)

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

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/6fceab2c5c58ea7faa463d15cabd5466749d18ab

commit 6fceab2c5c58ea7faa463d15cabd5466749d18ab
Author: Alexei Filippov <alph@chromium.org>
Date: Sat Feb 11 00:51:20 2017

DevTools: Fix toolbar layout glitches on memory panel

BUG= 681467 

Review-Url: https://codereview.chromium.org/2682123004
Cr-Commit-Position: refs/heads/master@{#449493}
(cherry picked from commit cd03f64dcc04f08e8ed35b058fe92bba1bd9abb1)

Review-Url: https://codereview.chromium.org/2685333006 .
Cr-Commit-Position: refs/branch-heads/2987@{#458}
Cr-Branched-From: ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}

[modify] https://crrev.com/6fceab2c5c58ea7faa463d15cabd5466749d18ab/third_party/WebKit/Source/devtools/front_end/profiler/ProfilesPanel.js
[modify] https://crrev.com/6fceab2c5c58ea7faa463d15cabd5466749d18ab/third_party/WebKit/Source/devtools/front_end/profiler/profilesPanel.css

verified this issue on WINDOWS 10, Ubuntu 14.04 and Mac 10.12.3 with chrome beta #57.0.2987.54 

Observed no unnecessary movements of icons up to 15 profile screenshots

Hence Adding TE-verified labels
 

Deleted: Issue 681467.mp4 941 KB

	Issue 681467.mp4 941 KB View Download

 Issue 696426  has been merged into this issue.