To troubleshoot OneDrive not showing recent changes to a file online, follow these steps:

1. Check the network connection – Check to make sure you are connected to stable and reliable internet access. If your connection is weak or intermittent, the file might not be updated correctly.
2. Refresh the web page – If the file is not automatically updated, try refreshing the page. This might prompt a recent update to the file to become available.
3. Log out and back in – Logging out and back in might also help prompt the most recent changes to your file, since the cache in your browser might be preventing those updates from being displayed.
4. Restart the OneDrive application – If none of these methods work, restarting the OneDrive application might be necessary before updates to the file become automatically available.