overlap images issue

Hello, as I wrote here: https://www.ads-software.com/support/topic/php-requirements-3/#post-11160179 I have a bad issue after last PHP problem: on that website (where every article has an image gallery) there are many pages with galleries of 2 column displaying full size images.. on those pages, after last update, there is a bad overlap issue on vertical images, as you can see on these pages:

https://lnx.maremmapress.it/wp/2018-19-gio-pr-invicta-gavorrano/

https://lnx.maremmapress.it/wp/2018-19-gio-pr-roselle-manciano/

https://lnx.maremmapress.it/wp/2018-19-gio-pr-grosseto-paganico/

https://lnx.maremmapress.it/wp/2012-ciriaco-de-mita-a-grosseto/