Using the "fix a single page" tool in the Internet Archive Bot interface for it.wikipedia.org, I noticed the bot adds the date when a certain URL was archived in english language rather then italian (for example, 16 march 2016 instead of 16 marzo 2016). The bot also replaces already existing (and correct) italian month names with wrong english month names.
Some examples:
https://it.wikipedia.org/w/index.php?title=Rover_serie_100&diff=91051564&oldid=89200228
https://it.wikipedia.org/w/index.php?title=Museo_diocesano_di_Rieti&diff=prev&oldid=91051499
https://it.wikipedia.org/w/index.php?title=Galleria_Colle_Giardino&diff=prev&oldid=91051434