PhotoSwipe bug

Hello.
PhotoSwipe lightbox method works fine on mobile.
But there is unpleasure bug on desktop screen.
When large image popups it two scrollbars appears. Bottom scrollbar hides a controls of lightbox.
Perhaps it needs to set width and height of layout elements little less then fullscreen size so scrollbars will not appears.

https://wordpress.org/plugins/picasa-express-x2/