Hiya Jill, Workfront usernames are no longer case-sensitive, I'm fairly certain that's what you're recalling. However, as we continue to bring Proofing more into Workfront, there are some limitations that we're working on. This is one of those cases where it appears to not be an issue that's widespread and can't easily be worked around by customers directly, and it's not a high impact issue. That said, I'm part of our Support team, not our product or engineering teams, so I can't say what is being actively worked on, or provide any sort of ETA. Though I imagine with our New Workfront Experience initiative, and the goal of making the user journey more intuitive, I suspect we'll see this addressed not as a defect or story, but as part of improving Workfront Proofing. Thanks! Dustin Martin Assigned Support Engineer Workfront