https://learn.microsoft.com/en-us/officeupdates/current-channel#version-2401-february-01
Resolved issues
Outlook
- We fixed an issue that caused expanded groups in the message list to become collapsed when changing which column they are arranged by.
Outlookで検索窓が2つに増えてしまったのを消したい(App Searchが表示される) - Microsoft コミュニティ
我が家は問題なしだけどこっちは直っていないのかな
https://learn.microsoft.com/en-us/officeupdates/current-channel-preview 未更新