Gallery shortcode: Title doesn’t show in Swipebox

I am creating a gallery with the [gallery] shortcode. To be precise, this is the exact code:

[gallery columns="6" ids".........."]

It works well. If I type in the “Caption” to each image, it displays the image title under the gallery thumbnail, however when I open the image, the Swipebox opens, with controls (arrows), but with no title.

I looked at the markup, there is a div with ID of “swipebox-top-bar” and there is a “swipebox-title” div in it, but it is empty. I looked at other live demos of wp [gallery] with swipebox, and the title is there.

Is there some setting or anything that I am missing?