Missing metadata for new items until force refreshed

[LeviSnoot]

I'm having a bit of an odd issue which is difficult for me to troubleshoot as the logs don't seem helpful for it and I migrated to a mergefs volume around the time 10.11.0 came out, which incidentally seems to be around the time this issue started happening.

When a new item is added to my Jellyfin instance from a library scan, it seems that most of the time, the majority of its metadata does not populate for the item. Images work, but nothing else. I deliberately do not use Jellyfin's built in metadata grabbers, instead relying fully on TinyMediaManager to create NFO's and images. This workflow has worked fine until recently, where metadata such as titles, tvdb/tmdb ID's, year, plot/description etc. do not populate. I've found that if I force refresh the metadata for the item(s) in question, the metadata does populate. This is of course far from ideal, as it requires manual intervention from me in order to have a functional library. In the past, a regular library scan has been sufficient for the metadata to populate and update correctly.

Environment:

Global:
OS: Debian 13 (6.12.48+deb13-amd64)


Library paths: /mnt/pool/{tv|movies|shorts|books|comics}
Path/file ownership: media:media (1001:1001)
Path/file permissions: 776/-rwxrwxrw-
Users in the media group: media, root, levi, jellyfin (I know this is likely insecure, but none of the files owned by media are sensitive)


Jellyfin:
Environment: apt install 
Version: 10.11.2
Jellyfin service user/group: jellyfin:jellyfin

JF Library settings (using TV Show library as example):
Folders: /mnt/pool/tv
Enable the library: Checked
Preferred download language: English
Country/Region: United States
Special season display name: Specials
Prefer embedded titles over filenames: Checked
Prefer embedded titles over filennames for extras: Unchecked
Prefer embedded episode information over filenames: Checked
Disable different types of embedded subtitles: Allow All
Enable real time monitoring: Checked
Automatically add to collection: Unchecked
Metadata downloaders (TV Shows):
- TheMovieDb: Unchecked
- TheTVDB: Unchecked
- The Open Movie Database: Unchecked
- Missing Episode Fetcher: Unchecked
Metadata downloaders (Seasons):
- TheMovieDb: Unchecked
- TheTVDB: Unchecked
Metadata downloaders (Episodes):
- TheMovieDb: Unchecked
- TheTVDB: Unchecked
- The Open Movie Database: Unchecked
Automatically refresh metadata from the internet: Never
Metadata savers:
- Nfo: Unchecked
Image fetchers (TV Shows):
- TheMovieDb: Unchecked
- TheTVDB: Unchecked
Image fetchers (Seasons):
- TheMovieDb: Unchecked
- TheTVDB: Unchecked
Image fetchers (Episodes):
- Embedded Image Extractor: Checked
- Screen Grabber: Checked
- TheMovieDb: Unchecked
- TheTVDB: Unchecked
- The Open Movie Database: Unchecked
Save artwork into media folders: Unchecked
Automatically merge series that are spread across multiple folders: Unchecked
Media Segment Providers:
- Intro Skipper: Checked
Enable trickplay image extraction: Checked
Extract trickplay images during the library scan: Unchecked
Save trickplay images next to media: Unchecked
Enable chapter image extraction: Checked
Extract chapter images during library scan: Unchecked

TinyMediaManager:
Environment: Docker
Container UID/GID: 1001:1001

If anyone has clues to help me I'd be very appreciative! To me it seems like a file permissions thing, but as you can see, my libraries have very open permissions. I'm not seeing anything in the logs that alludes to inaccessible files either.