CEP-15 (Accord) ConcurrentModificationException in accord.coordinate.tracking.ReadTracker.trySendMore

java.util.ConcurrentModificationException
	at java.base/java.util.ArrayList.sort(ArrayList.java:1752)
	at accord.coordinate.tracking.ReadTracker.trySendMore(ReadTracker.java:262)
	at accord.coordinate.ReadCoordinator.trySendMore(ReadCoordinator.java:206)
	at accord.coordinate.tracking.AbstractTracker$ShardOutcomes.toRequestStatus(AbstractTracker.java:74)
	at accord.coordinate.tracking.AbstractTracker$ShardOutcomes.access$100(AbstractTracker.java:39)
	at accord.coordinate.tracking.AbstractTracker.recordResponse(AbstractTracker.java:137)
	at accord.coordinate.tracking.AbstractTracker.recordResponse(AbstractTracker.java:123)
	at accord.coordinate.tracking.ReadTracker.recordResponse(ReadTracker.java:235)
	at accord.coordinate.tracking.ReadTracker.recordQuorumReadSuccess(ReadTracker.java:221)
	at accord.coordinate.ReadCoordinator.onSuccess(ReadCoordinator.java:115)
	at accord.coordinate.ReadCoordinator.onSuccess(ReadCoordinator.java:36)
	at accord.messages.CallbackHolder.lambda$success$0(CallbackHolder.java:39)
	at accord.messages.CallbackHolder.lambda$safeCall$3(CallbackHolder.java:62)
	at org.apache.cassandra.service.accord.async.AsyncOperation$ForConsumer.apply(AsyncOperation.java:343)
	at org.apache.cassandra.service.accord.async.AsyncOperation$ForConsumer.apply(AsyncOperation.java:330)
	at org.apache.cassandra.service.accord.async.AsyncOperation.runInternal(AsyncOperation.java:226)
	at org.apache.cassandra.service.accord.async.AsyncOperation.run(AsyncOperation.java:268)