Able to reproduce the issue on the latest available canary(57.0.2986.0) on Mac OS 10.12.2.

Using the per-revision bisect providing the bisect results,
Good Build:57.0.2958.0 (revision : 439976)
Bad Build: 57.0.2960.0 (revision : 440547)
You are probably looking for a change made after 440307 (known good), but no later than 440308 (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/d4fc1786d2efd995867dfa22f058211de979c884..8630d3b2a1d2039ec3b2734bc5bebc2d91ec1407

From the CL above, assigning the issue to the concern owner 

@dpapad - 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.

Review-Url: https://codereview.chromium.org/2583353003

Thanks!

 Issue 685031  has been merged into this issue.

@tsergeant: Do you have any suggestion on how to fix this?

By default a cr-action-menu focuses the anchor element (the dots icon) when closed. There is a 'change-query' event firing when the user clicks on "More from this site" button. Perhaps we could hook up to that event and focus the search input?

Sorry for the delay to reply.

Focusing search on `change-query` seems reasonable. I guess it comes down to the timing between that event firing and the menu refocusing the anchor element.

Ultimately, I don't think this is a high priority regression -- I don't think it would be common to click the 'More from this site' button and then immediately want to edit the search further.

I agree with tsergeant's assessment of the priority of this issue.

 Issue 692904  has been merged into this issue.

 Issue 628081  has been merged into this issue.

Marking bugs (mostly lower priority ones) that I am unlikely to get to soon as Available.