I've been able to recreate this issue consistently but only in a networked raid hosted by a headless client. Solo / non-networked raid does not exhibit this issue.
- Spawn on Streets, collect Relaxation room key.
- Go to relax room & open door, key is 1/2 uses.
- Try to move key in inventory -> key disappears and headless displays an error:
[Error :Fika.Server] ItemControllerExecutePacket::Operation conversion failed: Could not find item with id: 6945beec1cf654ad549120d9
- Closing inventory and opening inventory and the key appears again.
- Extracting with key works fine.
- Does not seem to affect other inventory operations.
Unknown if this affects other keys used when found in the active raid.
No mods on player client except Fika. Headless has SAIN and BigBrain but nothing else. No server mods except fika-server.