>>I agree that what you're describing looks like a bug. Do you have this with both behaviors (80 vs. 90)?
>
>It's a bug. See this http://cathypountney.blogspot.com/2007/11/gotcha-serious-report-bug-with-data.html.

You're right and I actually read it before, but just forgot for a moment. So, does Garrett's workaround work for you?