Weird problem with subtitles on 4k movies

[vevevas]

Hi, I've been encountering a weird problem with playing subtitles on 4k movies when on my LG TV, webOS. I've installed the subtitle extract and chose the library option for only text. On 1080p movies the subtitles on the mkv play without any issues, they are detected and played. On 4k movies, even thought I've extracted the subtitles, they are displayed as an option to be choosen, I choose any of them but when playing the movie none of them display. The only solution I've found was to put the subtitle in the same folder as the movie, then it works. Feels like it's not getting the subtitle from the subtitle extract folder, really weird, especially because it's only on the 4k ones. 

I've disabled the transcode settings.
The subtitles are normal srt files.
It works perfectly on PC.

I've found this on logs:

Code:

[2024-09-03 01:45:45.884 +01:00] [INF] [126] Emby.Server.Implementations.Session.SessionManager: Playback stopped reported by app "Jellyfin Web" "10.9.9" playing "Civil War (2024)". Stopped at "89362" ms
[2024-09-03 01:46:34.937 +01:00] [INF] [126] Jellyfin.Api.Helpers.MediaInfoHelper: User policy for "User". EnablePlaybackRemuxing: False EnableVideoPlaybackTranscoding: False EnableAudioPlaybackTranscoding: False
[2024-09-03 01:46:44.035 +01:00] [ERR] [72] Jellyfin.Api.Middleware.ExceptionMiddleware: Error processing request. URL "GET" "/Videos/fe070472-e832-32a1-7b5f-90c68a451b8c/fe070472e83232a17b5f90c68a451b8c/Subtitles/4/0/Stream.js".
System.ArgumentException: Unsupported format: srt
  at MediaBrowser.MediaEncoding.Subtitles.SubtitleEditParser.Parse(Stream stream, String fileExtension)