Small issue on next gen gallery

Hello, I installed the nextgen gallery plugin and everything works fine.
The amount of photos to be displayed, however, are many, and I decided to distribute minuature on multiple pages with pagination.
When I click on a thumbnail will open the photo and you can navigate within the same. Unfortunately, however, arrived at the end of the page, you can not scroll through the pictures of the other pages. I am forced to close the window of the zoomed image, change the page in the menu below paging, reopen a thumbnail and continue to scroll through the other photos.

you can make sure that I am not forced to close the enlarged image, so you can scroll through the entire gallery although there is paging?

thanks

https://wordpress.org/plugins/nextgen-gallery/