Hi k4tun,
First, my pleasure to assist you.
As per your description, please don’t worry, we can work together to narrow down and resolve the situation.
Since you mentioned issue happened to **** both on OneNote 2016 and OneNote for windows 10 and even newly created OneNote notebook page as well on your device, it seems there is incompatible issue between when using pen.
However, to check if this related with OneNote apps itself, if you don’t mind (my humbly request please don’t mind) could you please try to use OneNote for web (open your notebook page in online via browser https://www.onenote.com ) and try to write using pen to check if there is any difference, this step will help for us to narrow down your issue.
Meanwhile, could you please confirm, does it work before? when this issue starts e.g., after updates Windows OS, OneNote etc.
I appreciate your understanding and stay safe!!
Best regards
Waqas Muhammad