I have been plagued by this issue for a while: After closing OBS, a zombie process would continue to block the TCP port previously used by OBS’s websocket plugin. Trying to query the process ID never yielded any results. So what gives?
In my case, it turns out that the likely culprit was the OBS Droidcam plugin, which just received an update to mitigate exactly this misbehaviour.
After installing the update I can confirm that the zombie process and the listening TCP port no longer occur.
