I have the same problem and I am a bit surprised there is no answer to this.
It can be seen, for example, at http://demo.onedesigns.com/minimatica/?cat=4 (Landscapes) if we click on the right arrow: we have only one image and it remains narrow, even when hovered (showing only part of the text), while I think it should have automatically (and statically, no animation) the width of the images of the previous “page” when they are hovered.
Likewise, at page http://demo.onedesigns.com/minimatica/?cat=6 (portraits), we have 2 images, they are a bit wider when hovered, but not at the widest (text on first image is also truncated), and if you hover the second one, the left part of the text is lost, so it is not readable.
This demo doesn’t have a 3-image page, so I can’t comment on it, but I guess the problem remains.
It is hard to have always a multiple of 4 pages on each category… 🙂
I know the theme is free and you probably have more urgent to do, but if you can take a look at an opportunity, I would be grateful. Thank you.