After migrating some files , navigating to them via Windows Explorer using WebDav , some of the folders come up Empty. Even using Sharepoint Designer they are empty as well.
Syncing the Folder using the Onedrive Sync Client works
The issue is related to character limit when syncing files. The entire path, including the file name, must contain fewer than 400 characters for OneDrive, OneDrive for Business and SharePoint Online and 260 for offline sync.
You can also raise a user voice as mentioned below: