UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.186 Safari/537.36

Steps to reproduce the problem:
1. Put mouse over iframe
2. On an interval, cause a layout change so that an element moves back and forth between two position
3. Notice element triggers its mouseover listeners when the element moves under the mouse
4. Alt-tab away from that tab, move the mouse outside of where the iframe would be
5. Alt-tab back
6. Notice the mouseover event keeps happening at the iframe's last known mouse position

Minimal repro: https://jsfiddle.net/d3b5vu75/14/

What is the expected behavior?
The mouseover event shouldn't trigger when the mouse isn't really over the iframe.

What went wrong?
It seems this behavior was intentionally added in https://chromium.googlesource.com/chromium/src.git/+/2e27e8ef7352fa68de51b0c59257604c66b9781d

It may make sense to do this in general, but for iframes, the mouse position is "stuck" to its last known position, and can cause unexpected mouseover events to trigger.

Did this work before? N/A 

Does this work in other browsers? N/A

Chrome version: 64.0.3282.186  Channel: stable
OS Version: 
Flash Version: