I am seeing this problem too regarding the missing headers when using "Use Large Font". To recover I have to uncheck Use Large Font (too small for my old eyes). This first screenshot shows the missing titles (Home Spending Planning Investing Property & Debt Mobile & Web). Second attachment after recovering as described above.
Have you tried using the Windows Magnifier instead of "Use large Fonts?" That's one of the utilities under Windows Ease of Access. Press the Windows logo key and the = key to open Magnifier and see if that helps.
