When you kill the Ender Dragon it generates another end portal instead of activating the pre-generated portal.
Environment
Windows 8.1 with Bing, Java 7u76 64 bit
When you kill the Ender Dragon it generates another end portal instead of activating the pre-generated portal.
Windows 8.1 with Bing, Java 7u76 64 bit
Duplicate of MC-83009