File Explorer doesn’t display folder sizes in the Size column due to performance concerns. You can use a third-party app ...

While the files are there because they can be accessed from the command line, Explorer may not show ... open a folder in File Explorer, it may take time to load, depending on the number of files.

You can reveal them and remove the hidden property using File Explorer or Terminals. Make sure to open the folder ... software to get the files. Right-click on the desktop, click on View and show ...