Cursor has offset in tmux
With every typed character the cursor get a little offset to the left.
In this image the cursor is completely to the right.

I thought the problem was tmux, but it exists without tmux and over ssh, too.
I've seen something similar happen when the font is changed. Is this using the default font?
Also what programs does this happen in? I see busybox vi in the screenshot, does it happen elsewhere?
I have recorded a video of the problem. Yes it is vi. In tmux it is a huge problem with menlo or Fira Coda (I have installed it).
https://drive.google.com/file/d/16_rkioCgqdAEVQPrRbXs9yCndQF2i5Pt/view
I figured out, that the problem is definitely inside of tmux.
I reinstalled iSH, and outside of tmux everything is fine. In tmux something is broken with the terminal.
I've changed this setting (set -g default-terminal "screen-256color") to several other options, but the problem is still the same. Additionally the cursor is gone in neovim.
This might be #558?
I have the error in tmux, even if it is not splitted vertical or horizontal.
Also seeing this issue in tmux.
Seems I can reproduce it by repeatedly destroying and recreating a tmux window. My gut tells me it has something to do with pseudoterminal packet mode.
@tbodt This still happens it appears.
still seeing this :(