When the render distance is 5 or less and you are in the end, there is a fog or color black sky in the end, and i can only see the eye of the ender dragon. there is also a bug in the end with ender dragon i will post an issue later. HOPE YOU UNDERSTAND.
Environment
OS: Windows 8 (ver 6.2, arch x86)
Java: 1.8.0_25 (by Oracle Corporation)
Launcher: Minecraft Launcher 1.6.61 (bootstrap 100)
Minecraft: 16w39c (updated Wed Sep 28 05:33:50 GMT-08:00 2016)
Probably duplicate of MC-41822