[krasin]

I am usually running Claude Code in tmux on a Mac. Absolutely zero scroll issues (but I use tmux scroll for that, naturally). It's a delight.

[vmitro]

I did try using tmux in VS Code's terminal, but still managed to hit this issue with very large scroll buffers. Bumping tmux's internal scrollback buffer capacity to a 50-100k would delay the issue, but it would still eventually occur. In the last few CC versions they did get rid of the old buffer after e.g. conversation compaction, so that's maybe why you don't experience the issue anymore. An Anthropic engineer had even done a PR on tmux's GitHub repo to implement the OSC10/11 shennanigans, so jt seems tmux is not immune to it at all.