Hello +1
I’m having the same problem with the close button activating whatever link is in the background. This seems to be only occurring on mobile devices. For the time being I went ahead and removed the close button from the settings menu. Users will have to either drag up or down to close the lightbox on mobile.
Similar to what AndreyPanukov mentioned (#1), when hitting the back button on Android, the action is similar to clicking on the browser back button. Would there be a way to override this command to make the back button on Android close the lightbox instead?