How do I stop Gmelius collapsing Gmails left pane where it lists my folder?

This is an image of my left hand pane in Gmail - https://i.imgur.com/5B88ko6.png - I like to drag emails from the list into folders, it's quick and easy. Recently, the Gmelius boards and Shared Conversations appeared in a separate section in this pane and when I now try to drag emails into folders, the system "hides" my folders making it impossible.