Circle visible in top left corner when saving page with a 'flow-text box as PDF

[Clover_Creative]

I am looking for a solution to remove the small visible white circle that appears to generate in the top left hand corner when exporting, printing or saving a Word document as a PDF when the page has a linked 'flow through' text box. It appears to only happen on the pages that have a text box that allows text to flow through to subsequent text boxes. Any help would be greatly appreciated!