Hi! My gallery has this problem on admin mode, when i try to use the /editpics.php directory, the content is cropped, as if it is larger than the container (https://imgur.com/HiwLS8p). I believe is something related to CSS, but i don't know whitch tag exactly.
http://scarlettjohanssonbrasil.com/galeria
Thanks!
You will need to get help from the theme creator.
https://twitter.com/codeforfan/