Windows 11 keeps improving File Explorer, but Files keeps shipping the features people actually want.

Certain kinds of business computer files, such as Microsoft Word documents, multimedia files and ZIP archives, carry important information in the data bytes nearest the file's beginning; software ...

So if you open the first folder, you will see it as empty. But if you click on the Compatibility Files tab, immediately the latter folder is opened, and you see all the favicons there. It is called ...