When using iTerm2 the cursor could behaves strangely on tmux or apps console, the position of the cursor goes forward. A way t repdouce is when you search on commands history (ctrl+r) the chars on the terminal get's overlayed.
Changing the terminal is not a solution!
Detailed steps to reproduce the problem:
1- Begin a session in Tmux v2.6 (other version of Tmux also have the same problem as I'm aware) 2- Create a vertical split 3- Attempt to install a package using Python's pipenv package manager
Terminal split is misrendered apparently as a result of emoji characters being output by pipenv.
Try to set the environment variables LC_ALL and LANG to the following values:
export LC_ALL=en_US.UTF-8 export LANG=en_US.UTF-8
If the problem persists after applying the previous fix, try the following:
1- Go to Preferences -> Profiles -> Your current profile -> text 2- Enable "Use Unicode Version 9 Widths"