Reported in May and still not fixed....... Not good enough FileMaker.
This is a serious issue not just an annoying bug.
For More Information see: FileMaker Server
This is one of many acknowledged bugs that can be found in the Known Bug 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