Cache problem with home page in typolight 2.7.X

In typolight version 2.7.X when activate the option cache in a site or in the home page, the home page don't save in cache folder (/tmp) when accessed direct to the domain (/) but if i accessed the page directly with the complete URL the page saved in cache folder and cached.

Ex:

http://www.domain.com/ -> don't save in cache and don't cached
http://www.domain.com.com/index.php/home.html -> this is the same page and when browse direct to this URL the page save in cache and cached, after this if I accessed the page with http://www.domain.com/ still not cached.

This is a bug of typolight 2.7.X or i'm doing something wrong.

[FloB]

Please report bugs to the trac system.