Paginated Power BI Report Builder - Repeat Text Box on each page

Hi folks.  I have a report in Paginated Power BI report builder, with various report sections.  Each section has it's own tablix, and I have added a text box above each tablix containing the section name.

We need to export the report to pdf, and often there are hundreds of pages.  I have sucessfully managed to repeat the tablix headers on each page.  However, the text boxes do not.  I have set each text box to RepeatWith the approiate table.  It works in the web view of the report, but not when you export to pdf.  

Does anybody have a solution for this?  Thanks