[BUG] You messed up scroll back in one of the latest updates

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Using wezterm on WSL with tmux, I used to be able to press the key combination ctrl+b [ which would enable scrollback mode in tmux, this doesn't work anymore as the scroll back buffer appears to be only as long as the current page.

I believe it might be something related to how you've changed the / commands to hover at the bottom of the page overlapping the current buffer text. I can scroll using the scroll wheel but this is much more inconvenient than being able to use ctrl+u and ctrl+d or search whilst in the tmux scrollback mode.

What Should Happen?

I should be able to hit ctrl+b [ and scroll up and down using k and j, or ctrl+u and ctrl+d, or search by pressing ? and pressing n to page through results.

Error Messages/Logs

Steps to Reproduce

1. Run claude in tmux
2. Build up a conversation that grows past the current page size
3. Press ctrl+b [
4. Attempt to scroll past the page size and see you're unable to

If you attempt this in a different window without using claude, for example just hitting enter until there's enough new lines to grow past the buffer size you'll see the intended behaviour.

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.168

Platform

Anthropic API

Operating System

Other Linux

Terminal/Shell

WSL (Windows Subsystem for Linux)

Additional Information

_No response_