XML Pdf not displaying

Having just moved from Chrome and/or Firefox I find that one site that I visit regularly uses XML pdf which does not appear to display in Brave. In other browsers the page displays as any other page would do. In Brave I see a blank page with “highlight-for-xml” and “Open” instead of the desired pdf dispaly. On selecting “Open” the page is downloaded as a pdf file to my Downloads where I can open it with the default Adobe reader. Have I missed some setting in Brave.? Please don’t make the answer too complicated since I am old and dim :confounded: