Getting error with Publish method

[Maitri-Kata]

While trying to publish multiple messages concurrently, I am getting following error:

Operations that change non-concurrent collections must have exclusive access. A concurrent update was performed on this collection and corrupted its state. The collection's state is no longer correct.

Below is Stacktrace for error:

System.InvalidOperationException: Operations that change non-concurrent collections must have exclusive access. A concurrent update was performed on this collection and corrupted its state. The collection's state is no longer correct.
at System.Collections.Generic.HashSet1.AddIfNotPresent(T value, Int32& location) at Rebus.Idempotency.IdempotencyData.GetOrCreate(MessageId messageId) at Rebus.Idempotency.IdempotentMessageOutgoingStep.Process(OutgoingStepContext context, Func1 next)
at Rebus.Pipeline.Send.SendOutgoingMessageStep.Process(OutgoingStepContext context, Func1 next) at Rebus.Pipeline.Send.ValidateOutgoingMessageStep.Process(OutgoingStepContext context, Func1 next)
at Rebus.Pipeline.Send.SerializeOutgoingMessageStep.Process(OutgoingStepContext context, Func1 next) at Rebus.Retry.Simple.VerifyCannotSendFailedMessageWrapperStep.Process(OutgoingStepContext context, Func1 next)
at Rebus.Pipeline.Send.AutoHeadersOutgoingStep.Process(OutgoingStepContext context, Func1 next) at Rebus.Pipeline.Send.FlowCorrelationIdStep.Process(OutgoingStepContext context, Func1 next)
at Rebus.Pipeline.Send.AssignDefaultHeadersStep.Process(OutgoingStepContext context, Func1 next) at Rebus.ServiceProvider.ServiceProviderProviderStep.Process(OutgoingStepContext context, Func1 next)
at Rebus.Bus.RebusBus.SendUsingTransactionContext(IEnumerable1 destinationAddresses, Message logicalMessage, ITransactionContext transactionContext) at Rebus.Bus.RebusBus.InnerSend(IEnumerable1 destinationAddresses, Message logicalMessage)
at Rebus.Bus.RebusBus.InnerPublish(String topic, Object eventMessage, IDictionary`2 optionalHeaders)

Dotnet Framework Version: 8.0
Rebus: 8.4.3
Rebus.Idempotency: 2.3.0
Rebus.Idempotency.MySql: 2.2.0

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Step to reproduce: