[BUG] Some torrents not added as expected

[ArtyomFR]

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

Cross-seed add torrent to qbittorrent, some torrents are not added, cross-seed report injection failure.

Expected Behavior

Cross-seed add torrent to qbittorrent, all torrents are added, cross-seed see them and report successfull injection.

Steps To Reproduce

1. Let's cross-seed running
2. See logs of some torrent reporting injection failure
3. Tried to inject the faulty torrent manually
4. Torrent not added, without error on web UI or in logs.

Environment

- OS: Synology DSM
- How docker service was installed: By synology

CPU architecture

x86-64

Docker creation

qbittorrent:
    image: lscr.io/linuxserver/qbittorrent:latest
    container_name: qbittorrent
    depends_on:
      - gluetun
    environment:
      PUID: 1034
      PGID: 100
      TZ: Europe/Paris
      WEBUI_PORT: 8080
      TORRENTING_PORT: 18733
    volumes:
      - /volume2/appdata/mediacenter/config/qbittorrent:/config
      - /volume1/mediacenter/data:/data
    network_mode: service:gluetun
    restart: unless-stopped

Container logs

[migrations] started
[migrations] no migrations found
───────────────────────────────────────

      ██╗     ███████╗██╗ ██████╗
      ██║     ██╔════╝██║██╔═══██╗
      ██║     ███████╗██║██║   ██║
      ██║     ╚════██║██║██║   ██║
      ███████╗███████║██║╚██████╔╝
      ╚══════╝╚══════╝╚═╝ ╚═════╝

   Brought to you by linuxserver.io
───────────────────────────────────────

To support LSIO projects visit:
https://www.linuxserver.io/donate/

───────────────────────────────────────
GID/UID
───────────────────────────────────────

User UID:    1034
User GID:    100
───────────────────────────────────────
Linuxserver.io version: 5.1.4-r1-ls435
Build-date: 2026-01-04T23:50:59+00:00
───────────────────────────────────────

[custom-init] No custom files found, skipping...
WebUI will be started shortly after internal preparations. Please wait...

******** Information ********
To control qBittorrent, access the WebUI at: http://localhost:8080
Connection to localhost (127.0.0.1) 8080 port [tcp/http-alt] succeeded!
[ls.io-init] done.

[github-actions]

Thanks for opening your first issue here! Be sure to follow the relevant issue templates, or risk having this issue marked as invalid.

[j0nnymoe]

You would either need to investigate this with whatever ",cross-seed" is or directly with qbittorrent. The fact it's only some torrents seems like it's an issue outside of our control.

[LinuxServer-CI]

This issue has been automatically marked as stale because it has not had recent activity. This might be due to missing feedback from OP. It will be closed if no further activity occurs. Thank you for your contributions.

[ArtyomFR]

After testing with official qbittorrent-nox docker image, can confirm that this issue only appear with linuxserver.io image.
Closing this one as I won't reproduce anymore but someone from the official qbittorrent issue has the same issue (can't confirm they used linuxserver.io tho).

[LinuxServer-CI]

This issue is locked due to inactivity