The edit button currently isn't working in some browsers - it appears but clicking it doesn't do anything. I think it's a problem with one version of Vanilla (the software the forum uses) because I saw the same thing on some other forums. Weirdly it started working there right around the time it stopped working here, which is what makes me think it's related to a specific version of the forum software.
Hopefully Vanilla and/or ZOS will get it fixed soon.