If you use the id of the shared root folder (say 'xyz') and execute a 'queryForFilesList' with q='xyz' in parents, all the files in the folder with id=xyz are returned as expected. In your Google file (Google document, spreadsheet, presentation or drawing), you can press the. However, while composing this question, I think I discovered a work around. Find where your current Google file is located in Google Drive. I've tried using 'children.list' with no luck sharedWithMe with folderId=root returns nothing. Executing the query using Google's 'try it now' produces the same result. Obviously Chrome is using the work around.

I think this is a bug so I need a work around. So, the list that is returned seems to depend on 'when' the file was shared rather than 'if' the file was shared.

If the owner subsequently adds another file to the folder he is sharing with me, that file then appears in the list of files obtained by the above query.

To identify which query terms can be used to filter shared drives, refer to. If I use Chrome to show shared folders and click on a shared folder, the files in that shared folder are shown correctly. Search for shared drives queryterm is the query term or field to search upon. In my iOS app, when I execute 'queryForFilesList' with q='' I get a list of all files and folders on my Google Drive plus shared root folders, but not the files in the shared root folders.

Find all shared docs google drive