UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.112 Safari/537.36

Example URL:
http://codepen.io/bartzy/pen/XdYZgb

Steps to reproduce the problem:
1. Draw a rectangle on a canvas while using clip(), and move that rectangle around.
2. You will see weird moving artifacts on the rectangle itself after a second or two.

What is the expected behavior?
No artificats should present on the green rectangle.

What went wrong?
The rectangle should not have these artificats on it

Does it occur on multiple sites: N/A

Is it a problem with a plugin? No 

Did this work before? N/A 

Does this work in other browsers? Yes 

Chrome version: 52.0.2713.0  Channel: canary
OS Version: OS X 10.11.4
Flash Version: Shockwave Flash 21.0 r0

This is happening on stable Chrome, latest Canary (desktop) and on all Android devices I checked (on Chrome and Chrome Dev).
 

Deleted: Image 2016-04-20 at 11.58.01.png 7.8 KB

	Image 2016-04-20 at 11.58.01.png 7.8 KB View Download