If you own or have access to playlist folders or team catalogs with longer titles, you will likely need to be able to see more of those titles when using Songspace.
To change the size of the list of team catalogs and playlist folders on the left-hand side of your account:
Hover your cursor over the divider that separates the list of team catalogs & playlist folders from the list of songs.
Click the divider when the two-ended arrow pops up.
Drag that divider to wherever you'd like and release your mouse.