.bashrc/.profile is not loaded on new tmux session (or window) — why?

Question

When tmux starts or opens a new window, it does not load my .profile or .bashrc. I end up typing . ~/.bashrc every time. Is there a

Answer 1

Running bash explicitly worked for me, by adding this line to my ~/.tmux.conf file:

set-option -g default-command "exec /bin/bash"