Robocopy hides folder after copy - OnTheKnows/A GitHub Wiki
This worked instead: attrib -h -s -a [ Drive : ][ Path ].
For example: attrib -h -s -a "C:\My hidden folder".
Use those commands in a command prompt to stop robocopy from hiding your folder.
Alternatively, use /A-:SHA in the robocopy command to prevent the issue in the first place.