Unwanted spaces in cross references.

Im getting an extra space just after the opening quote in some cross references in FM10 Structured document. This causes the cross reference to wrap around incorrectly and also looks bad. The space does not appear in the definition, in fact majority of cross references using this particular deifnition do not show with the extra space. It only shows in a number of cross references.

Also, there is no space in the source heading. There is an Index marker right at the beginning of the source heading but moving it does not make a difference. Also when I try deleting the first few characters from the source, the cross reference updates but the extra space still shows. Any ideas what could be wrong? I haven't got much experience with structured frame.

Marcin