I'm working on a layout that will be used in FileMaker 14 and FileMaker 15. In Windows 7 FileMaker Pro Advanced 14.0.6 and 14.0.4 is putting the header above the Top Navigation part. Attached are screen shots showing this layout in Browse mode and in Layout mode.
When using the same file ( Hosted on local server ) The Mac versions of FIleMaker Pro Advanced 14.0.6 and 126.96.36.199 displays these parts correctly. Initial tests with FileMaker Pro Advanced 188.8.131.52 on Windows 7 appears to show the parts correctly.