Minifrontpagepro: a strange thing...

Hello, I am very satisfied with the Minifrontpage, but I have a problem that I cannot understand.
So, look at this page: servizi.istitutoolivetti.it/joomla30/ind.../progetti-e-attivita
This is an article containing a Minifrontpagepro module that shows a series of articles belonging to the category "Projects and activities". Note the correct breadcrumb (Cattura1 attachment).
If I open one article, the first for example: servizi.istitutoolivetti.it/joomla30/ind...prendistato&catid=16 the breadcrumb become strange (a mixture of different categories: Cattura2 attachment).
But this happens ONLY if I publish the same article within another menu: the one on the right, named "Ampliamento offerta".
Is there any reason this happens? I can't understand.
I provide you Super User credentials... if you can help me
Many thx in advance !!!
Roberto

it was elementary !!! how stupid I am
Thankyou,
Roberto

A last thing: OK, it's a Joomla behaviour. But why does it happen only if there are two menus that recall the article? if the menu item is single, everything works normally ...