People upthread have reproduced and demonstrated that that's not the issue here.
EDIT: Actually, OP says "The variant it produces is not on my machine." - https://twitter.com/DocSparse/status/1581560976398114822
> Wish people who don't know at all how it works stopped acting all outraged when they're laughably wrong.
Physician, heal thyself.
Depending on your preferred telemetry settings, GitHub Copilot may also collect and retain the following, collectively referred to as “code snippets”: source code that you are editing, related files and other files open in the same IDE or editor, URLs of repositories and files paths.
"How Does Copilot Work"