I'll check when at my mac later, don't remember it happening, but them I might not have actually tried!

I've purchased. As others have mentioned, it's very slick. Feels nice to use. I have a feature request though. 'Quick look' - when I have a photo highlighted, it would be great to tap the spacebar and see a bigger view of the photo. Doesn't have to be full res, and I wouldn't want it to disrupt the flow of browsing, but to get a better view would be great.

This is good news. However, just having a little play and I can't see how it's possible to create Hotspot Templates? Is this something thats possible? If I have several artboards with different pages on each containing a nav, I don't really want to have to link the nav up on every single page. This was solved by Hotspot templates in Invision, is Prototype able to do something similar?

Yea, this seems very much a Craft issue, not Sketch