Yep, both servers have Use Original Title unchecked. And yes, I am using online metadata from themoviedb.com. Star Wars Episode IV is the only one that doesn't include the entire title in mediabrowser. All Star Wars titles are listed in the S folder under Titles.
My files were named (using FileBot) via themovieDB, and it is putting the complete title as the file name. However, I just ran it through FileBot again, and now it's dropping the Star Wars Episode # from the file name. Must have made a change since I ripped the files back in Aug 2014. That explains the difference between your files and mine. Probably explains why they are displayed incorrectly for me, now that I know themovieDB has changed their format. Personally, I prefer them all under S, but that's what Playlists are for, right?
And I hadn't noticed my Playlist dropped the episodes for V and VI. Sometimes you can't see something when you're looking right at it!
HA! I just looked at MediaBrowser again on both servers. Yep, they are there under E and R. I swear they weren't there two days ago! Still doesn't explain the duplicate listings under S, but I'll take what I can get...

Dan
LG NANO85 4K TV, Samsung JU7100 4K TV, Sony BDP-S3500, Sharp 4K Roku TV, Insignia Roku TV, Roku Ultra, Premiere and Stick, Nvidia Shield, Yamaha RX-V583 AVR.
Primary server: AMD Ryzen 5 5600GT, 32 gig ram, Windows 11 Pro, 22 TB hard drive space | Test server: Intel i5-6400, 16 gig ram, Windows 10 Pro
HOWTO: Enable debug logging HOWTO: Identify media file contents