Display issue

Hello

After OCS Migration of 2.4 to 2.8, passing by each versions, i have a display issue between main page "computer per tag" and the page for a particular tag.

For example, on main page for a tag i have 39 computers, if i clic on this same tag, the page with the computers list  concerning this tag opens, but i have only 38 computers.

If i request the database by sql, i have 38 computers in database.

Have you already encountered this problem ?

Thanks

Stéphane