I am not able to automatically deactivate a workflow when it's executed by a schedule. I logged a ticket with the support team. They said that this is a known bug that is fixed in a later version that we have (V10 Build 325). I was suprised as this seems like something that would impact most users and I would have expected it to be fixed at least at the early stages of V10.
It's annoying as I have to go manually clean up my activities window regularly.
Did anyone out there have the same issue?