Is it related to  issue 739724 , which supposedly should have been fixed in Chrome 61.0.3162.0? 

Maybe, I am not sure,  but the observed behavior is different - in https://bugs.chromium.org/p/chromium/issues/detail?id=739724 black rectangles appear only in the upper corners, not like here.

Tested the issue on chrome Stable #60.0.3112.113,Beta #61.0.3163.71 & Canary #63.0.3205.0 in Windows 7 & 10.0 and was able to reproduce the issue.Please find the screen shot for reference.

This is a Non-Regression issue since seeing this from M50 #50.0.2624.0, Making the status to Untriaged so that the issue would get addressed.

Note : Able to reproduce the issue in MAC 10.12 and Linux Ubuntu 14.04.
Adding related  issue 739724  owners in cc for this issue.

Thank you!

Deleted: 761807.mp4 690 KB

	761807.mp4 690 KB View Download

In the video it shows the popup showing at one size, and then snapping to a different size. I'm not familiar with the code that shows the popup. Maybe it waits for a size from the page before resizing?

>In the video it shows the popup showing at one size, and then snapping to a different size

Related: issue 754606.

I am sorry but this video does not really reproduce the initial issue, as it was about extension popup blinking black when showing. 

I have also noticed that no black blinking is seen if hardware acceleration is turned off in browser settings.

Also, reverting https://chromium.googlesource.com/chromium/src.git/+/64dd9570929e2427dbd76cc6ccc30892fa849f4b gets rid of the issue.

Running with --disable-d3d11 also removes black blinking.

Per #9, sounds like this might be a regression.  Unfortunately, jbauman@ is no longer on Chrome, it seems.  sky@, looks like you reviewed revision 64dd9570929e2427dbd76cc6ccc30892fa849f4b; do you know anyone that could take a look? 

Archiving old bugs that have only received trivial updates for some time.

If you feel this issue should still be addressed, feel free to reopen it or to file a new issue. Thanks!