Currently, if you hide an uploaded file or folder in the Resources tool, that file/folder will not appear for students when using the 'Browse Server' method to link to files on the server.

However, if you hide the Resources tool in entirety (Site Info > Tool Order > Make Tool Invisible to Students), all files and folders which are not explicitly hidden themselves will still be accessible to students via the 'Browse Server' method. This is counter intuitive, as the the typical use case for hiding the Resources tool from students is so that they cannot access the files and folders within, without the need to go into each file and folder individually and set them to be hidden.

The linked PR alters the textarea code to check if the Resources tool is hidden. If so, it will not return any file or folder entries; otherwise it returns any that are not individually hidden (original behaviour).