Fix for Sublime not opening files via CLI command when ran from TMUX.
Install via brew:
brew install reattach-to-user-namespace
Add to zshrc:
set-option -g default-command "reattach-to-user-namespace -l zsh"
Restart Tmux server
tmux kill-server
Info and solution from: https://forum.sublimetext.com/t/subl-doesnt-open-the-file/14790 sublimehq/sublime_text#675 (comment)