I tried the Twenty Thirteen theme and it worked correctly. So it must be my theme. I saw the “gallery-size-responsive-200”, but couldn’t see how to change or remove it. I updated my “Responsive” theme and Jetpack at the same time and then saw that it broke the thumbnail gallery. I’m using the Thumbnail choice, not the Tiled choice. The media settings don’t seem to matter at all. It there a way to remedy this using this theme? Thank you.
