versions show as separate titles for some movies

[tepsys]

Before I get into the problem, I have searched both the forums and google and have not found someone with my particular problem. They all seemed to have some problem with how they had files named. And it was solved once they corrected it. I believe I have mine named correctly yet the problem persists.


I am running Jellyfin on a Debian 12 (Bookworm) VM from this repo:
cat /etc/apt/sources.list.d/jellyfin.sources
Types: deb
URIs: https://repo.jellyfin.org/debian
Suites: bookworm
Components: main
Architectures: amd64
Signed-By: /etc/apt/keyrings/jellyfin.gpg

Server version
10.9.7
Web version
10.9.7
Build version
10.9.7

As far as I can tell from the Jellyfin Docs, I have my library naming scheme setup properly.
I have my movie library set up as movie title (year)/movie title (year) - [resolution].mp4|mkv|etc. This is working for some movie titles, but not others. Some still appear as multiple separate listings.

For example, this movie shows as separate listings in the Jellyfin UI:
   

And here is the folder structure:
28 Days Later (2002)/
├── 28 Days Later (2002) - [1280x688p].mkv
├── 28 Days Later (2002) - [1920x1040p].mkv

However, this title shows as one listing, with multiple versions:
   

And has this folder structure:
The Bourne Identity (2002)/
├── The Bourne Identity (2002) - [1920x1080p].mkv
├── The Bourne Identity (2002) - [1920x816p].mp4

Why does the versioning seem to be properly applied on some titles but not others? I have forced a full rescan of my library and it did not change anything.