Unhandled object disposed exception on the close of a worker thread

Running into this during n1ql situational.

unhandled Exception: System.ObjectDisposedException: Cannot access a disposed object.
Object name: 'The ThreadLocal object has been disposed.'.
   at System.Threading.ThreadLocal`1.GetValueSlow()
   at System.Threading.ThreadLocal`1.get_Value()
   at System.Collections.Concurrent.ConcurrentBag`1.GetThreadList(Boolean forceCreate)
   at System.Collections.Concurrent.ConcurrentBag`1.TryTakeOrPeek(T& result, Boolean take)
   at System.Collections.Concurrent.ConcurrentBag`1.TryTake(T& result)