I'm using FMP 10 Advanced, by the way.
Thank you for your post.
I am able to duplicate the problem on FileMaker Pro 10 and FileMaker Pro 9.
I have forwarded the information to our Development and Software Quality Assurance (Testing) departments for review and confirmation. When I receive information, I will let you know.
In the mean time, make sure the top edge of your merge field is at the same height (or above) of the top edge of the dynamic symbols.