Plugin ignores "uploads: parent:" query

[ac-magma]

I have several fields where I have a custom destination for the uploaded file, such as:

fields:
   sponsor_logo:
      type: files
      query: site.find('sponsors')
      uploads:
         parent: site.find('sponsors')

The first query is correctly targeted. However, uploads don't land in the specified parent folder. When I remove the plugin, the files are uploaded in the correct folder again, so the issue is with the plugin.