Hello!
I have been researching here in the forum for a solution to make the lightbox captions multi line, however I found out it’s not implemented yet.
I manipulated the CSS so I could at least have a text wrapping (instead of the ellipsis at the end of the single line); It’s pretty simple:
.w-lightbox-caption {
white-space: normal;
}
You can override other styles too, like color, font-size, etc, just add the style to head tag or before closing body.
You can find more about the white-space property here: white-space - CSS: Cascading Style Sheets | MDN