A family of Microsoft products that enable users to capture, organize, and reuse notes electronically.
I'm experiencing the same problem, using One Note (Office 365) on Windows 11. I just repaired Office 365 as explained above, and I'm using a notebook created a couple of days ago (I'm been having this problem for quite some time!).
Any other suggestions? Here an example of a double solid black marker line on my name: first screenshot on One Note, second on the printed (or exported, its the same) PDF file.
EDIT: I just checked. On the online app, the same page looks like this:
It seems to be a problem with the markers...