that sounds interesting. there are a few terminals with tmux integration. which terminal are you using? could you share your config please?

This is on alacritty and Windows terminal. Look for the tmux config keys:

    # Show the status bar at the top
    set-option -g status-position top

    # Make the status bar always visible
    set-option -g status on

actually, the critical setting that matters is:

    set-option -g mouse on

that makes the tabs clickable. works in every terminal i tried it in.