MapleSolaxiaV2 Deadlocks?

[lockingkz]

    sun.misc.Unsafe.park(Native Method)
    java.util.concurrent.locks.LockSupport.park(Unknown Source)
    java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(Unknown Source)
    java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(Unknown Source)
    java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(Unknown Source)
    java.util.concurrent.locks.ReentrantLock$FairSync.lock(Unknown Source)
    java.util.concurrent.locks.ReentrantLock.lock(Unknown Source)
    tools.locks.MonitoredReentrantLock.lock(MonitoredReentrantLock.java:75)
    client.MapleCharacter$8.run(MapleCharacter.java:2256)
    server.TimerManager$LoggingSaveRunnable.run(TimerManager.java:144)
    java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
    java.util.concurrent.FutureTask.runAndReset(Unknown Source)
    java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(Unknown Source)
    java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source)
    java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    java.lang.Thread.run(Unknown Source)

have anyone encountered this before?
I am not very sure how it triggered but it just happened.

I think this happened after PQ sometimes.

 

[s4nta]

MapleCharacter.java:2256

 

[lockingkz]

Its related to skillCoolDownTask.

But I still dont get it, what kind of skill caused this problem.

 

[sunnyboy]

It was doing something and tried to do something again without finishing the first task (took too long), thus conflicting to a deadlock.