Duplicated Tag Title

[Geppux]

Hi, I searched in the forum but I didn't find something like this. VM 3.0.16 Joomla 3.5.1

In webmaster tools I have several tag tile duplicated; if I go to check I noticed that there are items should not exists... I make an example.
One of the tag title is for the page http://www.mulligan.it/it/attrezzatura-da-golf/legni/callaway-big-bertha-fw-detail.html and this is correct, but google tell me that the same tag title is also in the pages http://www.mulligan.it/it/accessori-per-il-golf/allenamento/callaway-big-bertha-fw-detail.html and http://www.mulligan.it/it/carrelli-da-golf/callaway-big-bertha-fw-detail.html but the product (big-bertha-fw) don't exists in the category accessori-per-il-golf/allenamento and carrelli-da-golf .... how can it possible?
The product is in the categories Legni, Fairway Woods, Close-out and Attrezzatura... somebody can explain me why this happens and how to solve? Thank you.
Giuseppe

[jjk]

Might be a cache problem. Clear all Joomla, VM and browser cache files and check if the 'Ghost-urls' still work.

[Geppux]

Cleared all but it still works!

[jjk]

Perhaps check with ftp if there are any cache folders/files left from other (uninstalled) extensions. Could also be a server cache.
However the 'Ghost urls' won't hurt because they both include the correct canonical url in the generated source code.

[Milbo]

There are "unlimited" links to any product and category. It is only limited by the GET. So that the links still work is by design. But they should show a 303 or so. At least the correct canonical link