This is Regression issue broken in 'M-68’ and providing the bisect info below:

Good Build: 68.0.3437.0 (Revision: 560454)
Bad Build:  68.0.3438.0 (Revision: 560883)

Narrow bisect URL:

https://chromium.googlesource.com/chromium/src/+log/b6400be0772456598798f10213387df1464ca65a..43cff3330cfafb88ae82d769b5d8b5e902fad801?pretty=fuller&n=10000

Suspecting: r560829 ?

@fsamuel: 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 not seen on Mac OS.

Thank You..!!

Adding release blocker label for this issue.Please reduce priority or remove if not the case.

@fsamuel: Could you please revert/fix the issue as this will block tomorrow's M-68 dev release.

Thank You!

Update:

Issue is also seen on urls such as chrome://flags/, chrome://settings/ , DevTools, etc.

Deleted: Actual Video.mp4 1.9 MB

	Actual Video.mp4 1.9 MB View Download

 Issue 845914  has been merged into this issue.

 Issue 845836  has been merged into this issue.

+kylechar@ since he's been working a lot on Windows lately.

Combobox popups aren't full blown renderers on Windows, are they? I don't see how a navigation CL can break comboboxes.

FYI:

We are planning a Dev RC today, please revert the culprit CL ASAP.

I have a fix, but I'm reverting the CL first:

https://chromium-review.googlesource.com/c/chromium/src/+/1070493

Thanks very much. 

Could you please revert the same in 3438 branch. We are planning to build a Dev RC from this branch.

Merged: https://chromium-review.googlesource.com/c/chromium/src/+/1070495

Reverted in 3438 branch as well.

https://chromium.googlesource.com/chromium/src.git/+/07ced2a034575d54264af555279bc336fd1eabf5

 Issue 846030  has been merged into this issue.

Able to reproduce the issue on Chrome OS on 68.0.3438.0/10710.0.0 dev-channel Daisy, Reks and Candy

Thanks!

Update : 

Rechecked the above issue on Windows (7, 8, 8.1, 10) and Linux (14.04 LTS) OS with latest Dev build version 68.0.3438.3 and the issue is fixed.Kindly refer the attached screen cast for reference.

Deleted: Fixed_video.mp4 382 KB

	Fixed_video.mp4 382 KB View Download

If there is no pending work, can we tag this as fixed?

 Issue 846479  has been merged into this issue.

 Issue 846345  has been merged into this issue.

I have the same problem.(Wasn't sure if I should post new issue since it's almost the same)

I tested it on latest dev version and Ubuntu 18.04.

The thing is the problem only happens on one monitor which is connected by DVI and on other two monitors that are connected by HDMI works correctly.

Tested with latest stable version on ubuntu(Google Chrome	67.0.3396.79 (Official Build) (64-bit)) and with both version I tried to run it with --disable-gpu and nothing changed.

Video is on version(Google Chrome	68.0.3440.15 (Official Build) dev (64-bit))

Right screen - monitor connected by DVI
Left screen - monitor connected by HDMI

Problem only occurs on the right screen.

Deleted: drop-down.mp4 2.0 MB

	drop-down.mp4 2.0 MB View Download

I'm confused...3440 does not incorporate merges into 3438?

The revert is in 3440: 
https://chromium.googlesource.com/chromium/src.git/+/98749dbcac704b9a03810cdaee9758d54593be65

This should've been fixed a while ago. I'm marking as FIXED. Please reopen if this is still an issue.