cph thinking I opened multiple VSCode windows when reloading VSCode

[Saif-Dawood]

Extension Version: v6.1.0

VS Code Version: 1.87.2

Browser Version: Brave Browser 123.1.64.116

Operating System: Ubuntu 22.04.4 LTS, 42.9, 64-bit

Whenever I try reloading my VSCode window, for example to open a different folder or workspace to work on, cph gives me this notification:
Are multiple VSCode windows open? CPH will work on the first opened window. CPH server encountered an error: "listen EADDRINUSE: address already in use :::27121" , companion may not work.

Not everytime though. It sometimes happens, and other times works fine.