Attaching actual video for reference.

Deleted: Actual_lost cursor.ogv 523 KB

	Actual_lost cursor.ogv 523 KB View Download

Able to reproduce the issue on Mac canary 56.0.2894.0 as well.

Using the per-revision bisect providing the bisect results,
Good Build: 56.0.2888.0 dev (Revision : 424625)
Bad Build: 56.0.2889.0 dev (Revision : 424926)

You are probably looking for a change made after 424921 (known good), but no later than 424922 (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/2a1e232d951e2069ca2cb98e5beb6923a13036a5..adff9e47eea6d9241a1fd845123e102588ff5db5

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

@pfeldman - 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/2413023002

Thanks!

Able to reproduce the issue on Windows 7 using chrome version 56.0.2900.0.

pfeldman@ could you please look into this issue.

@ pfeldman: Gentle ping, issue is marked with a blocker label and able to reproduce the issue on 56.0.2912.0 Cananry as well for Windows 10, MAC 10.12, Ubuntu 14.04

Thanks.!

Able to reproduce the issue on Windows 10 and mac using chrome version 56.0.2918.0/56.0.2919.0

luoe@, Could you please take a look

Thanks for the report and bisect!  After some investigation, it's going to be better to put this off for now and work on a wider-scale solution with tests in the future.