I think I have just run into this same issue on Maui. I have jobs that are still running and producing output, but showing Failed in the Web UI. Interestingly, the box in the Workflows sidebar is still blue, but if I click on the running suite it shows Failed.
I haven’t been able to reproduce the problem here. If you think it’s reproducible for you, please get in touch with me directly. However, I suspect it is a symptom of recent Slurm problems on our HPC.
Thanks @hilary.j.oliver, my conversation with NeSI support suggests it’s probably the Slurm controller issues. I’ll let you know if it doesn’t resolve once that is fixed.