UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_4) AppleWebKit/601.5.17 (KHTML, like Gecko) Version/9.1 Safari/601.5.17

Example URL:

Steps to reproduce the problem:
1. Load GIF with Transfer-Encoding chunked
2. First playback works as expected
3. When the GIF goes to loop, it turns all white

What is the expected behavior?
It is expected that the GIF continues to loop. This works in Firefox and Safari, and with the 'X-Content-Type-Options: nosniff' header set, this was working in Chrome.

What went wrong?
When loading a GIF served using 'Transfer-Encoding: chunked' the playback fails to loop and instead displays a blank frame at the end. That is, the first playback works as expected, but when it goes to repeat playback, it stop and shows nothing. This issues was previously addressed by setting the 'X-Content-Type-Options: nosniff' header, however this no longer works in later versions of Chrome 50.

Does it occur on multiple sites: Yes

Is it a problem with a plugin? No 

Did this work before? Yes 

Does this work in other browsers? Yes 

Chrome version: 50.0.2661.102  Channel: stable
OS Version: OS X 10.11.4
Flash Version: Shockwave Flash 21.0 r0