Chat-only users can open/copy Custom GPT Knowledge files in the file panel. Is this intended?

I sold chat-only access to a Custom GPT. The Knowledge files are proprietary runtime logic, not user documents. In an employee/user chat, the files now appear in the right-side file panel and can be opened/copied.

I am not asking whether the GPT can use the files. I expect that. I am asking whether chat-only users are supposed to be able to open the raw Knowledge files.

Is anyone else seeing this? Is this a new UI behavior, workspace-specific behavior, or a bug/regression?