Due to how Jellyfin identifies TV shows, it wasn't possible after all to keep the old 'paths' for your "Leaving Soon" librariess.
Please remove /leaving-soon/tv and /leaving-soon/movies from your libraries manually inside the Jellyfin Dashboard.
Janitorr will add /leaving-soon/tv/media and /leaving-soon/tv/tag-based automatically for you.
I made the mistake of only testing v1.4.1 for movies. This hotfix release should solve the problem that occured with TV shows.