problems after joomla and slideshow ck upgrading

I've just upgraded to joomla 3.8.6 and to last version of slideshow ck.
After that, slideshow ck doesn't correctly work (it overlaps main body part of the page, and some slides miss), but only in the Italian version of my site
www.waterwind.it/new/it/

while on the english version it works regularly

www.waterwind.it/new/en/

So, what's wrong?

Hi
the problems comes from the html code of your article "Vuoi uscire in windsurf insieme a noi?" that is truncated and leave an opened html tag
go in the advanced options of the module >> Fix html >> set it on YES and tell me
CEd

No, setting Fix html on yes was not enough to solve the issue.

At moment, I erased the article from the slider

Strange case...