This is a known issue.
For More Information see: http://forums.filemaker.com/posts/9b3a2c7571?commentId=266047#266047
This is one of many acknowledged bugs that can be found in the Known Bug List thread here in the Report an Issue section of the forum.
It can also be downloaded as a database file from: https://www.dropbox.com/s/jt09b82i0xijbu3/FMP%20Bugs.zip
Thank you for your post.
As mentioned by PhilModJunk (Thank you!), our Development and Testing departments are aware of this issue under Windows. I have attached your post to the original report. When any new information becomes available, I will post again.