Setting the 'with_front' to true or false in my Custom Taxonomy is landing to the exact same urls as

http://localhost:8080/wp/commercial-services/action/
http://localhost:8080/wp/commercial-services/action/

I have the rewrite rule as

'rewrite' => array('slug' => 'commercial-services','with_front' => false),

and also I changed it to

'rewrite' => array('slug' => 'commercial-services','with_front' => true),

but as I said it is landing it exact same URLs, so can you please let me know what is the point of using this property? I also flushed the WP every time after changing the true or false