Microsoft 365 Insider:
Version 2506 (Build 18925.20050)
Security updates listed here
Resolved issues
Outlook
- We fixed an issue that caused the "Try the new Outlook" toggle to be enabled when working in Classic Outlook side by side with the new Outlook.
PowerPoint
- Resolved an issue where users may receive the error "We're sorry, something went wrong that might make PowerPoint unstable" after pasting content from Word.
Word
- We've made performance improvements when performing Mail Merge with large text files.
- Resolved an issue where the search icon in the Navigation Pane may flicker when hovered over.
- Resolved an issue where unsaved comment drafts may disappear on Autosave when "Restrict Editing" setting is enabled.
- We fixed an issue where print preview may stop working when printing long emails.
- Resolved an issue where users may receive the error "We're sorry, something went wrong that might make PowerPoint unstable" after pasting content from Word.
- Resolved an issue where user defined content marks may be missing after applying a sensitivity label.
- Resolved an issue where Outlook may stop working for users when trying to reply to or forward a message.
- Resolved an issue where inserting Word documents as objects in a document with a RTL (right-to-left) language unexpectedly resulted in the documents being inserted as pictures.
Source:
- Release Notes Current Channel (Preview) - Office release notes
- Update History for Office Current Channel (Preview) - Office release notes

Latest Office and Microsoft 365 Updates for Windows
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