Dear muhammedzallukh,
Thanks for posting back.
I have tested in the same version of OneNote, but I can't reproduce the same situation. To troubleshoot the situation further, please try the following suggestion.
- Please set Windows into Clean boot and disable the startup items. Check if the situation is caused by the startup items.
- If the above suggestion doesn’t help you, please switch to another Windows user profile (if you don’t have another user profile, please create a new user profile, then switch to the new user profile), run OneNote, and check again.
If the situation still happens, I would like to collect more information.
- Does the situation also happen in Word? You can click the Draw tab to select the highlighter and test again.
- Does the situation also happen when you choose other pens in OneNote?
- Before the situation happens, have you installed or updated any programs?
Also, before finding out the root cause, you can temporarily use OneNote for the Web (www.onenote.com) to highlight your notebook.
We look forward to your response. Thanks for your cooperation.
Sincerely,
George | Microsoft Community Moderator