I tried to recreate this situation, I have not been able to recreate the behavior you are seeing. I'm using FMPA 14.0.5.
I've attached a copy of my database. Give it a shot.
Thank you for your post.
I was also unable to reproduce this issue with FileMaker Pro 14.0.5 (Advanced) on Mac OS X 10.10.5 or Windows 7 Professional SP1. Would it be possible for you to produce a sample file of this issue and instructions to reproduce?