Hey, thanks for the report. This is a known issue with clipboard handling in the prompt input. The custom serializer strips mention pills @file, @folder, and so on when copying to text/plain, so when you paste outside Cursor you only get empty space. It’s not macOS-specific and reproduces on other platforms too.
We’re tracking the issue, but there’s no ETA for a fix yet.
Workaround: if you need to copy a message you already sent and keep the mentions, try right-clicking the message in chat then select Copy prompt. It uses the saved text with the file names. For drafts, it’s easiest to write the prompt in an external editor and then paste it into Cursor.
Related threads for context:
- Cut and paste from Cursor input buffer to other apps doesn't work
- Glass windows don't copy/past data
We’ll post an update when we have news on the fix.