One of my users in Germany running on OSX reported odd behavior in a DB I support. In one form I have a few fields in a layout region. When he clicks on one of these fields (I think it's just a particular one but maybe it's any of them), the whole layout region goes gray and the text disappears. But the field is still editable - he pasted in some text and did a save, then reopened it and the text was there. I can't see anything in the design that looks unusual. Any thoughts?
He sent me some screenshots and my German users are normally very diligent, so I don't doubt his behavior. None of my other handful of Mac users have reported the same thing, so perhaps it's something on his machine.