I too had this issue on my first game (iPad3, portrait mode). But I switched the options to Multiball Camera: On (I usually have it off) with my usual locked Camera 2, and haven't seen the issue since. Played a few very long (1B+) games too.
Oh wow. So far this works. Knock on wood.
I'll explain as best I can, the various problems I've seen;
1) Frankenstein multiball starts and the camera zooms in on Frankenstein but stays there instead of zooming back out, ball after ball launch onto the playfield and eventually drain as you can't see the flippers, when 1 ball is left the camera returns to its correct position.
2) Frankenstein multiball starts correctly and the camera repositions itself in the correct position but after playing correctly for a while the camera randomly zooms back into Franky and stays there again as above
3) Frankenstein multiball starts and the camera moves from Franky to the plunger view, gets stuck there and only gives you control of the left flipper until all bar 1 ball has drained.
Mike, the strange thing is while beta testing the table this problem simply wasn't there, I played hours on it and didn't see the franky cam problem once. On the official release I got the franky cam bug on my first game, and almost every game since. I did actually get the camera stuck at plunger view during multiball bug ( no.3 above ) once during beta testing. Did anything change between the full beta test build ( before you dropped it back to the limited free version beta build ) and the official release?
For now we're disabling the special frankenstein camera until we have a better solution.
I'm not sure if the Frank camera was in the beta?
I've just managed to reproduce the bug I mentioned above, finished a game, entered name then while dracula animation on guitar was playing I pressed the enter button again and the next game started while name entry controls were still there. Had to force quit again.
Here's a screengrab showing the name entry controls on top of a new game;