The "Introduzione" section of both the following articles:
ends with the https://it.wikivoyage.org/wiki/Template:- that insert a <br style="clear: both;" />
So the following section "Lista dei patrimoni dell'umanità" is rendered & shown after the longest element (between the map on the right and image "column" on the left).
The strange behaviour that occur only with Chrome consist on the fact that right clicking over the external link at the beginning of the "Introduzione" section (or ctrl+left click to open it in a new tab), the "BR" stop working and the page layout change.
Now, if left clicking on the sortable column title of the table, of right clicking in any internal link, the BR start working again, so the layout came back to the original and wanted status.
I've tried with other browser, but Chrome is the only one that manifest this effect.