The issue with Google Drive is NOT fixed.
However, if you use something like MS Synctoy to
copy your library and calibre2opds catalog to Google Drive, then if Google Drive ruins the folder scheme you won't lose anything and can recreate it.

IIRC Publication mode should
copy all necessary files and make a calibre2opds catalog independent of the actual calibre library.
Aside: I have gotten 16.5 GB of Dropbox storage due to referrals from my signature.