UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.87 Safari/537.36

Example URL:

Steps to reproduce the problem:
See attached screenshots:

1. User loads email thread with particular content in IBM Verse (have not yet narrowed down what is particular about the content that causes this, and it still occurs with all text replaced with the 'a' character) (see chrome_noscroll_noissue.png)
2. Scroll a short distance into this thread
3. Observe content disappear, showing only gray background color (see chrome_scroll_issue.png)
4. Scroll back up to the top, content renders properly again

We have reproduced this in our app (IBM Verse) only when showing particular mail content in a particular user's account. I haven't been able to create a minimum reproducible case, so I'm working on trimming out any user data and as much markup outside the affected area as possible to create an example and will upload that when I have approval. I'm hoping that having screenshots and the bisect range will be helpful otherwise.

What is the expected behavior?
The content should be rendered as it was before scrolling. This works correctly in Safari, Firefox, and Chromium revisions prior to/including 361270 (see firefox_scroll_no_issue.png).

What went wrong?
The content is replaced with the background color. Controls inside the content area seem to still be present but invisible, as hovering over them causes the appropriate cursor to be shown.

This issue is present in Chrome stable 49.0.2623.87 and latest Chromium build (382837). Issue is only present on Macbook Pro retina displays, OR when mirroring the Macbook display to an external display. This has not been observed on any Windows machine or external displays at native resolution, including Apple Cinema displays.

Applying transform: translate3d(0,0,0); to the affected element resolves this issue, but is not acceptable as a workaround because we rely on fixed positioning to make a child of this element 'sticky'.

Does it occur on multiple sites: N/A

Is it a problem with a plugin? N/A 

Did this work before? Yes Revision 361270

Does this work in other browsers? N/A 

Chrome version: 49.0.2623.87  Channel: stable
OS Version: OS X 10.11.3
Flash Version: Shockwave Flash 21.0 r0

Bisect result:

You are probably looking for a change made after 361270 (known good), but no later than 361286 (first known bad).
CHANGELOG URL:
  https://chromium.googlesource.com/chromium/src/+log/72531bf4c6bd3103da47d6e39784b26df512b8d5..fdc3aee749470b6182f98c07a150e125d60e291c
 

Deleted: chrome_noscroll_noissue.png 123 KB

	chrome_noscroll_noissue.png 123 KB View Download

Deleted: chrome_scroll_issue.png 48.5 KB

	chrome_scroll_issue.png 48.5 KB View Download

Deleted: firefox_scroll_no_issue.png 108 KB

	firefox_scroll_no_issue.png 108 KB View Download