After last upgrade I have noticed that articles add-on has changed and is not reponsive anymore. Normally a 3 column articles add-on will turn in one column in mobile.
This happened beacuse the class sppb-col-4 had those attributes in your css:
@media (min-width: 768px)
.sppb-col-sm-4 {
-ms-flex: 0 0 33.333333%;
flex: 0 0 33.333333%;
max-width: 33.333333%;
}
But this is not happening anymore. I have a test environment where no update has been done and works fine.
Also, no gap between the article as commented in this post:
https://www.joomshaper.com/forum/question/22950