Regarding step #5 I'm not sure how to check it, what I see in the UI are 5 drafts (concurrent_tasks is set to 5) and the "main" task init incharge of them, and there are clones of the original base experiment with different configurations (although they're not really a clone, only the configs are cloned. the artifacts output model and the results aren't cloned)

And for the things to check - Yup it's like that and still the same error