I have the same problem - both with CSS Menu en CSS Form NOT with CSS Sculptor.
I think the problem cold have samting to do with the "Site Tool" thing.
it generated a other problem with the message:
in file ""WA_SiteTools_Progress"": ReferenceError: refersh is not defined.
in file ""WA_SiteTools_Progress"": refreshUI is not defined
sorry for my brurry spelling.