Hi. I am using tmux as replacement for screen because it supports read-only sessions, and I'm really only using the most basic feature set (detach and attach), so forgive me if my question does not make sense in a more general context.

I have the problem that if I attach to a session with "read only" mode, I cannot seem to scroll at all. Following this Stackoverflow post, if I try Ctrl + B, [, I only get the message that Client is read-only. So it appears as if you cannot scroll in read only mode. Is this intended behavior? Perhaps my understanding of what "read only" means is off.

I've observed this behavior on tmux 3.1c (Debian 11) and 3.2a (Ubuntu 22.04). I have not yet tested the latest version, but it's not mentioned in the change log, and I suspect I'm not running into a bug, but rather a problem of my understanding. $TERM is xterm-256color outside of tmux and screen inside tmux.

Is there a way to obtain the behavior I want? I want to have something like a read-only session, in the sense that I cannot accidentally write to stdin or press Ctrl + C or similar, but still be able to scroll the output? I'm sorry if this is covered somewhere, but all sources I found so far just referred back to the Ctrl + B, [ shortcut that I mentioned up above.