Using Cursor CLI (2026.01.23-916f423), scrolling works as expected for me when I work in a chat. Do you have a screenshot/screen recording you could share?
I am sorry, I just realized it works just fine, unless I run agent inside screen. I have been doing that so I can leave an agent running and check back later.
UPDATE: Yeah, the issue was that I was running the agent inside screen so I could leave it running and check back later. I was simply unfamiliar with how screen (and tmux) handle scrollback. Now that I understand how to use them properly, I can scroll through the output without any issues.
It’s better to report an issue and find out it was fine all along than not to report at all! Additionally, another user might encounter the same problem and find your post helpful.