Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Thank you for reporting this issue. This has been fixed: Page Title is blank when you send a meeting from classic Outlook to OneNote - Microsoft Support
Here are the minimum build numbers where the fix is available, depending on your update channel. You can find your build and channel by going to File > Account in OneNote.
- Beta Channel: Version 2412 (Build 18319.15010 )
- Current Channel Preview: Version 2412 (Build 18324.20000)
- Current Channel: Version 2411 (Build 18227.20114)
- Monthly Enterprise Channel: Version 2410 (18129.20220)