Another case of bad scrolling behind a modal.
#gallery-1 {
margin: auto;
}
#gallery-1 .gallery-item {
float: left;
margin-top: 10px;
text-align: center;
width: 33%;
}
#gallery-1 img {
border: 2px solid #cfcfcf;
}
#gallery-1 .gallery-caption {
margin-left: 0;
}
/* see gallery_shortcode() in wp-includes/media.php */
Previously:
Scroll bleed through and scroll position loss, view plugin details, iPhone 6+
Scrolling beneath modals, Nexus 5, iPhone 5, 4.1-alpha-20141002
https://core.trac.wordpress.org/ticket/31381 (Needs review and commit)
https://core.trac.wordpress.org/ticket/29909 (fixed)