Seeing Activity Task Started After WorkflowExecutionCompleted?

@Ruslan On the same note I do see the following in my logs. I’m trying to figure out where this exception gets thrown. Is it some background process in the SDK that is still trying to start the Activity?

"io.grpc.StatusRuntimeException: NOT_FOUND: workflow execution already completed
	at io.grpc.stub.ClientCalls.toStatusRuntimeException(ClientCalls.java:262)
	at io.grpc.stub.ClientCalls.getUnchecked(ClientCalls.java:243)
	at io.grpc.stub.ClientCalls.blockingUnaryCall(ClientCalls.java:156)
	at io.temporal.api.workflowservice.v1.WorkflowServiceGrpc$WorkflowServiceBlockingStub.respondActivityTaskFailed(WorkflowServiceGrpc.java:2757)
	at io.temporal.internal.worker.ActivityWorker$TaskHandlerImpl.lambda$sendReply$1(ActivityWorker.java:305)
	at io.temporal.internal.common.GrpcRetryer.lambda$retry$0(GrpcRetryer.java:79)
	at io.temporal.internal.common.GrpcRetryer.retryWithResult(GrpcRetryer.java:97)
	at io.temporal.internal.common.GrpcRetryer.retry(GrpcRetryer.java:76)
	at io.temporal.internal.worker.ActivityWorker$TaskHandlerImpl.sendReply(ActivityWorker.java:299)
	at io.temporal.internal.worker.ActivityWorker$TaskHandlerImpl.handle(ActivityWorker.java:196)
	at io.temporal.internal.worker.ActivityWorker$TaskHandlerImpl.handle(ActivityWorker.java:154)
	at io.temporal.internal.worker.PollTaskExecutor.lambda$process$0(PollTaskExecutor.java:73)
	... 3 common frames omitted
Wrapped by: java.lang.RuntimeException: Failure processing activity response. WorkflowId=6887dc26-f4d2-442f-aad3-628b2fbb30b4, RunId=2958f530-25f6-4162-bb5c-cbeb0576fafe, ActivityType=ReleaserActivityStart, ActivityId=8a9528ac-ccc1-309e-8cd1-19a6e0a30a1c
	at io.temporal.internal.worker.ActivityWorker$TaskHandlerImpl.wrapFailure(ActivityWorker.java:259)
	at io.temporal.internal.worker.ActivityWorker$TaskHandlerImpl.wrapFailure(ActivityWorker.java:154)
	at io.temporal.internal.worker.PollTaskExecutor.lambda$process$0(PollTaskExecutor.java:79)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
"