To fix the issue, below are a few action steps to try:

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1. Check View Settings: Verify that you have the Show the most recent versions of files setting enabled in your document library view.
2. Check Caching Settings: Verify that you have the caching option Make all files available offline disabled in the Sync page of your document library.
3. Check Sync Status: Check the sync and version status of your files in the Details Pane of your document library to make sure they are synced.
4. Check Access Permissions: Verify that you have access to the file or folder in the library and that you have not been restricted from viewing a particular version.