Microsoft is changing the SharePoint document library UI for sites used by Teams private channels to make sensitivity labels read-only and move a link into the command bar. That doesn’t sound so important, but it’s part of the preparation for the introduction of Teams Connect, aka Shared channels. It’s just a pity that the text of message center notification MC261534 was so confusing when it first appeared.
https://office365itpros.com/2021/06/21/changes-sharepoint-layout-teams-private-channels/
