We opened a case and had a reply, which let us know that it's a known issue with the 25.5 Beta firmware. I have made available your previous firmware, please roll back to this to resolve the issue. You can do this via Network-Wide>General. This has been resolved in our latest 25+ firmware which is to be released in the next couple of weeks. We have scheduled a roll-back for tonight, which should resolve the problem.
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