I've just noticed... if I have portfolio item X open, and scroll down and click on this same portfolio thumbnail... neither it, or any other displayed will respond to my link. So it seems if you click on the thumb of the same item you already have open... it disables the portfolio. Clicking on any item at that point is unresponsive. It isn;t until you re-load the page/portfolio do they work again.
Can you help with this? It's an unusual scenario.. but now that I've discovered it I need to fix it.