Stefan Cordes

Happens on 1.8.1, too:
Thread dump says (see MineCraft-Thread-Dump.txt):

"Client thread" #1 prio=5 os_prio=0 tid=0x0000000002573800 nid=0x26a4 waiting on condition [0x0000000000e1e000]
java.lang.Thread.State: WAITING (parking)
at sun.misc.Unsafe.park(Native Method)

• parking to wait for <0x00000000c11f5628> (a com.google.common.util.concurrent.ListenableFutureTask)
  at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
  at java.util.concurrent.FutureTask.awaitDone(FutureTask.java:429)
  at java.util.concurrent.FutureTask.get(FutureTask.java:191)
  at com.google.common.util.concurrent.Uninterruptibles.getUninterruptibly(Uninterruptibles.java:135)
  at com.google.common.util.concurrent.Futures.getUnchecked(Futures.java:1421)
  at cyk.v(SourceFile:323)
  at bss.a(SourceFile:1949)
  at bss.a(SourceFile:1937)
  at bwx.a(SourceFile:46)
  at bxe.a(SourceFile:342)
  at bxe.k(SourceFile:405)
  at bxe.p(SourceFile:382)
  at bss.r(SourceFile:1480)
  at bss.at(SourceFile:880)
  at bss.a(SourceFile:317)
  at net.minecraft.client.main.Main.main(SourceFile:124)

Thanks. I did not find the related Bug as I searched for "ListenableFutureTask".

The related bug is pretty old (07/Sep/14). Can you force solving it?