Ok... This bug has long long time...
In a word:You CANNOT open ANY GUI in the NetherPortal........
Except when Alt+Tab to leave game then pause menu......
Environment
Win7 x64
Java 7 with javac
MCLauncherBN by zhh0000zhh 3.4
OpenGL FX 1700
MC-74803
Player in NetherPortal without GUI
Resolved
Duplicate
0
WAI. Dinnerbone's comment from MC-2071: