Does your menu have the menutype set to main? We recently discovered an issue with that which sounds similar.

Hi Bakul

It's something different then. I have no clue

Hi
this problem appears only with url-friendly enabled
this problem appears only with only with the 3.2
only from the 3.2 there is a new component named like this message "Post-installation messages"
it appears only in the sub-menu on its first positions

if you want I can give you the access to this website

thanks

I'm doing some tests
move the "corba nero" voice to the first position thi bug goes away
but if I put this article to the last sub-menu position all the other voices get this error in their url and point to a wrong article

removing my custom error.php from the template, all those wrong link point to 404 category not found or to 404 article not found. except one that point to a wrong article.
I've seen that there are many people with problems with the post-installation component but not with this issue

Hi Bakual
I've found where is the problem :)
it is into the table jos_menu of those menu voices into the field "path"
there is present:
"alias" field == "corbucci-chianti-riserva-docg-sangiovese"
"path" field == "prodotti-azienda-agricola-corbucci/Post-installation messages/corbucci-chianti-riserva-docg-sangiovese"

so the problem is from back-office when I change the position of the voice's menu
Can you help this?

yes removing from the database from that table "jos_menu" all "Post-installation messages/" from those "path" field the menu returns to work well.
Now if I try to change the position, from the back-office, of menu voice
joomla creates a wrong path with "Post-installation messages/"
the problem is there, into the code that make this string

Yeah, somehow the entry for the postinstall component ends up in your category tree. That's what makes no sense to me so far.
Can you send me backend access to my email address bakual@bakual.ch. I'd love to have a look at it and try figuring out where that goes wrong.

The issue can be solved by using the "Rebuild" button in the toolbar.
I guess it originated in a wrong update SQL for com_postinstall (and possibly also com_tags) where we added fixed lft and rgt values for the menu item. But those depend on the actual menu tree structure, which can be different.

I'm closing this issue as I don't see a way to fix it using code. Fixing is easy enough using the toolbar button.

Hi. "yes removing from the database from that table "jos_menu" all "Post-installation messages/" from those "path" field the menu returns to work well."
Thats was a problem. Now it works perfect!