That description seems extremely similar to this known bug: FMPA 11 Drop-Down List Bug 1
This is one of many acknowledged bugs that can be found in the Known Bugs List here in the Report an Issue section of the forum.
It can also be downloaded as a database file from: http://www.4shared.com/file/8orL8apk/FMP_Bugs.html
Yes, same issue as this known bug. I'll be waiting for a fix.