Confirmed. Also got this crashing my SMP unmodded server. Though cows werent in water, they were standing on smooth stone. Server running 14w31a for a couple days and this was the first time the crash happened.
Fixxxer
Confirmed. Also got this crashing my SMP unmodded server. Though cows werent in water, they were standing on smooth stone. Server running 14w31a for a couple days and this was the first time the crash happened.