Yesterday I quickly released iwebkit version 4.6.2 fixing a huge javascript error on my part leading to problems withthe popup. Indeed when a page was used with a size over the window size of the iPod the black cover would not show and the popup would be cut of in fullscreen.
Instead of getting the document height the javascript got the window height.

The themepack also received a minor update adding a missing image for the list view. It does not change according to the theme so if you didn’t delete it you are fine.

Also iforum has been posted in the download section for those still wanting to give it a try.