When a {{WaitForCurrentOperationAsyncOperationBase}} has {{InvokeWaitForCompletion}} invoked, the Dependency is waited on, after which the {{Dependency.Status}} is checked. This can cause an exception where {{Dependency.IsValid()}} is false.

{{Attempting to use an invalid operation handle}}

This exception comes from {{AsyncOperationHandle.InternalOp}} where a null value will result in the above message.

We have attempted to reproduce this issue, building to iOS and MacOS, but were unable to. And the customer who is experiencing this issue hasn’t been able to narrow this down either.

The customer worked around this issue by adding a {{Dependency.IsValid()}} check after {{WaitForCompletion}}, but I believe this statement should instead read:

{{if (!Depedency.IsValid() || Dependency.Status == AsyncOperationStatus.Failed)}}

The expected outcome is that the {{WaitForCurrentOperationAsyncOperationBase.InvokeWaitForCompletion}} doesn’t raise an exception and fails gracefully.

Reproducible on according to the Customer: Localization 1.4.4 (2022.3.8f1)