Change to OneDrive mounting Shared Libraries on MacOS

Your comparison shows a change from one Shared Libraries location to separate Finder locations for individual libraries. I could not verify an official release note confirming that exact transition, so I would not assume it is an expected rollout solely because multiple users see it.

Microsoft does document OneDrive’s use of macOS File Provider and sync locations under Library > CloudStorage. Finder labels alone are therefore insufficient to establish which underlying paths changed.

Compare an affected and unaffected Mac using the same libraries: record macOS version, OneDrive build, Standalone versus Mac App Store installation, and the old and new paths. Check that each library’s files remain accessible online and that OneDrive reports synchronization complete.

Provide that comparison and your screenshot through your organization’s Microsoft 365 support channel. Avoid manually moving or deleting active sync roots to recreate the previous layout; first obtain confirmation of the intended behavior and supported remediation.