iPhone glitch: "toNode" disappears for about 0.5 seconds

[Callum Locke]

I'm getting this bug in my own code but you can also see it happening in the multicolour-number-grid demo (at http://www.rich-harris.co.uk/ramjet/ under More Examples).

To reproduce: Visit that page on an iPhone 5 (and maybe other devices, I haven't tested). Tap one of the items. It animates smoothly, but then when it's finished, and the big photo is at its full size, it waits a moment then the big photo disappears and reappears. It's gone for about 0.5 seconds (it's very noticeable).

I'm guessing the tempoary disappearance is due to Ramjet removing the toNode clone before firing the 'done' callback that unhides the real toNode. But it's weird that there would be such a big gap of time; maybe there's something else going on?