On Windows (either CMD or PowerShell) you get extraneous output:

'tput' is not recognized as an internal or external command, operable program or batch file

It comes from \splitbrain\phpcli\TableFormatter::__construct():

$width = @exec('tput cols');

When the tput command is not available the shell prints an error message on stderr and it's apparently transmitted to the shell where you run the PHP script. (Apparently bash is also subject to this but it isn't an issue because ncurses is normally installed.)